Website background won't change color

hi freecodecamp team, basically i’ve been trying to
debug my website? but i can’t for life of me see what is causing
my site not to change BG color? code here

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
 
  <link rel="stylesheet" href="./style.css">

</head>
<body>
<!-- partial:index.partial.html -->
<html>
<title>Coolvibes|Reloaded</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://coolvibes-reloaded.com/w3.css">
<link rel="stylesheet" href="http://coolvibes-reloaded.com/fonts.css">
<link rel="stylesheet" href="http://coolvibes-reloaded.com/font-awesome.min.css">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.1/css/all.css">



<div class="cc_player" data-username="coolvibes" data-size="sm" data-style="light">Loading ...</div><script language="javascript" type="text/javascript" src="http://boogie.vside-radio.com:2199/system/player.js"></script>

<center><img src="images\header.png" height="123" width="440" class-"LOGO" alt="coolvibes alightens you with tons of different tunes to entertain you"></center>
<center>
  <p>You're Tuned To</p>
  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

  <head>
    <div id="snow"></div>
    <title>Station Activity</title>

    <style type="text/css">
      td {
        font-size: 0.6em;
      }

      /* temporary for testing purposes */
      #NowOn {
        border: 0px solid black;
        font-size: 11.5px;
        color: white;
        background: transparent;
        height: 65px;
        width: 350px;
      }
    </style>

    <script type="text/javascript">
      /* NOT CURRENTLY USED
var thedate = new Date();
var dayofweek = thedate.getDay();
var hourofday = thedate.getHours();

var GMT = new Date().getTimezoneOffset();
var offsetGMT = +1 new Date().getTimezoneOffset()/01:00;
*/
      // Sun=0 1 2 3 4 5 Sat=6
      var DayOfWeek = new Array('Weekend', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Weekend');
      var NoShow = 'No Show Scheduled<br />for COOLVIBES';
      var DH = new Array(7);
      for (d = 0; d < 7; d++) {
        DH[d] = new Array(24);
        for (h = 0; h < 24; h++) {
          DH[d][h] = '';
        }
      }
      DH[1][10] = 'Monday at 10 AM<br>AUTOMIX<br>with auto';
      DH[1][08] = 'Monday at 8 AM<br>AUTOMIX<br>with auto';
      DH[1][12] = 'Auto mix<br>with auto parrott<br>Monday at Noon<br>No Genre';
      DH[1][14] = 'auto<br>with auto parrott<br>Monday at 2 PM<br>No Genre';
      DH[1][16] = 'No Show Name<br>with Katy Cox<br>Monday at 4 PM<br>Rap';
      DH[1][17] = 'The Greatest<br>with DJ Fresh<br>Monday at 5 PM<br>No Genre';
      DH[1][18] = 'Revolution Corner<br>with Randy Underwood<br>Monday at 6 PM<br>No Genre';
      DH[1][20] = 'Daily Affirmation<br>with DJ Hightower<br>Monday at 8 PM<br>No Genre';
      DH[1][22] = 'No Show Name<br>with David Doggett<br>Monday 10 to Midnight<br>No Genre';
      DH[1][23] = 'No Show Name<br>with David Doggett<br>Monday at 11 PM<br>No Genre';
      DH[2][13] = 'No Show Name<br>with Michelle Caillouet<br>Tuesday at 1 PM<br>Rock';
      DH[2][08] = 'Gingernation<br>with DJ Harvey<br>Tuesday at 8 AM<br>Mix n Match';
      DH[2][16] = 'No Show Name<br>with Sweet Action Jackson<br>Tuesday at 4 PM<br>Rock';
      DH[2][20] = 'The Rock Hour<br>with Dan the Man<br>Tuesday at 8 PM<br>No Genre';
      DH[3][10] = 'Love Me! Hate Me!<br>with DJ Nia<br>Wednesday at 10 AM<br>No Genre';
      DH[3][11] = 'Westcoast Wednesdays<br>with DJ Smoove<br>Wednesday at 11 AM<br>No Genre';
      DH[3][15] = 'The Storm Hour<br>with the Weatherman and Reba<br>Wednesday 3 to 5 PM<br>Classic Rock';
      DH[3][16] = 'The Storm Hour<br>with the Weatherman and Reba<br>Wednesday at 4 PM<br>Classic Rock';
      DH[3][22] = 'EZ Does It<br>with DJ EZ<br>Wednesday at 10 PM<br>Rap';
      DH[4][12] = 'automix<br>with autodj<br>Thursday Noon to 2 PM<br>mix';
      DH[4][22] = 'Request Show<br>with Strawbs<br>Thursday 8 PM to 10pm<br>Mix n Match';
      DH[4][13] = 'automix<br>with autodj<br>Thursday at 1 PM<br>mix';
      DH[4][14] = 'The Hour<br>with DJ V-Jeezy<br>Thursday at 2 PM<br>No Genre';
      DH[4][22] = 'Request Show<br>with DJ Strawbs<br>Thursday at 10 PM<br>No Genre';
      DH[5][10] = 'Friday at 10 AM<br>Christian Music<br>with Jammin J';
      DH[5][11] = 'Friday at 11 AM<br>Christian Music<br>with Jammin J';
      DH[5][12] = 'Friday at Noon<br>automix<br>with autodj';
      DH[5][13] = 'Friday at 1 PM<br>automix<br>with auto';
      DH[5][09] = 'Friday at 9 AM<br>Mix n Match<br>with Will';
      DH[5][14] = 'Friday at 2 PM<br>automix<br>with autodj';
      DH[5][15] = 'Friday at 3 PM<br>automix<br>with autodj';
      DH[5][16] = 'Friday at 4 PM<br>automix<br>with autodj';
      DH[5][17] = 'Friday at 5 PM<br>automix<br>with autodj';
      DH[5][19] = 'Friday at 7 PM<br>Mix n Match<br>with Will';
      DH[5][22] = 'Friday at 10 PM<br>Dance/Trance<br>with Dean';
      DH[5][23] = 'Friday at 11 PM<br>automix<br>with autodj';
      DH[6][18] = 'Saturday at 6 PM<br>automix<br>with automix';
      DH[6][19] = 'Saturday at 7 PM<br>Dance/Trance<br>with Dean';
      DH[6][13] = 'Saturday at 1 PM<br>Old School/Reggae<br>with El Carlito';
      DH[6][22] = 'Saturday at 10 PM<br>mix<br>with autodj';
      DH[6][23] = 'Saturday at 11 PM<br>mix<br>with autodj';
      DH[7][18] = 'Sunday   at 6  PM<br>Request Show<br>with Strawbs';
      DH[7][21] = 'Sunday   at 9 PM<br>Old School/Reggae<br>with El Carlito';
      // Add more when schedule is known. Note: there may be better ways to do this when information is known.
      function OnNow() {
        var thedate = new Date();
        var dayofweek = thedate.getDay();
        var hourofday = thedate.getHours();
        // alert(dayofweek+':'+hourofday+'<br />'+DH[dayofweek][hourofday]);
        var showOn = DH[dayofweek][hourofday];
      }

      function NowON() {
        var thedate = new Date();
        var dayofweek = thedate.getDay();
        var hourofday = thedate.getHours();
        var showOn = DH[dayofweek][hourofday];
        if (showOn == '') {
          showOn = thedate + '<p />No Show Scheduled';
        }
        document.getElementById('NowOn').innerHTML = showOn;
      }
    </script>
  </head>

  <BODY onLoad="NowON()">
    <!-- Unhide this if table display desired
<script type="text/javascript">
document.write(TableStationSchedule())
</script>
-->
    <script type="text/javascript">
      document.write(NowON));
    </script>
    <div id='NowOn' onClick="NowON()">Click For Now On COOLVIBES</div>
  </body>

</html>
</center>

<body>

  <div class="topnav" id="myTopnav">
    <a href="https://coolvibes-reloaded.com/index.html" class="active">Home</a>
    <a href="https://coolvibes-reloaded.com/Schedule.html">Schedule</a>
    <a href="https://coolvibes-reloaded.com/tunein.html">Tunein Again</a>
    <a href="https://coolvibes-reloaded.com/mobile.html">Mobile</a>
    <a href="https://coolvibes-reloaded.com/Birthday.html">Birthday</a>
	<a href="https://coolvibes-reloaded.com/featured.html">Featured</a>
    <a href="javascript:void(0);" class="icon" onclick="myFunction()">
      <i class="fa fa-bars"></i>
    </a>
  </div>

  <div style="padding-left:16px">

  </div>

  <script>
    function myFunction() {
      var x = document.getElementById("myTopnav");
      if (x.className === "topnav") {
        x.className += " responsive";
      } else {
        x.className = "topnav";
      }
    }
  </script>
  <!-- Header -->

  <!-- End Header -->
  <!-- Start Presenters -->

  <div align="right">
  </div>
  <html>

  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320">
      <path fill="#333" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,117.3C672,107,768,117,864,133.3C960,149,1056,171,1152,154.7C1248,139,1344,85,1392,58.7L1440,32L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z"></path>
    </svg>

    <div align="center">
      <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
         <i class="fa-fw fas fa-snowflake"></i>Presenters!
      </div>
    </div>
    </div>
    <center><style type="text/css">.WimpyPlayerPopup406, .WimpyPlayerPopup406:hover, .WimpyPlayerPopup406:visited, .WimpyPlayerPopup406:link{font-size:20px;background-color:#2D2D2D;position:relative;display:inline-block;overflow:hidden;padding-left:1em;padding-right:1em;margin:0px;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;cursor:pointer;height:2em;border-radius:1em;-webkit-border-radius:1em;-moz-border-radius:1em;-ms-border-radius:1em;-o-border-radius:1em;border-style:solid;border-width:1px;border-color:rgba(123,126,128,1);box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),0.85px 2.769px 3px rgba(0,0,0,0.22817204301075278);-webkit-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),0.852px 2.769px 3px rgba(0,0,0,0.22817204301075278);-moz-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),0.852px 2.769px 3px rgba(0,0,0,0.22817204301075278);-ms-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),0.852px 2.769px 3px rgba(0,0,0,0.22817204301075278);-o-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),0.852px 2.769px 3px rgba(0,0,0,0.22817204301075278);white-space:nowrap;line-height:1.9em;color:#fdfdfd;font-family:Arial, Helvetica, sans-serif;text-align:center;font-weight:normal;font-style:normal;text-shadow:-0.16px -1.16px 0.23597px rgba(0,0,0,0.7),0px 1.25px 6.7px #2e4a63;-webkit-text-shadow:-0.16px -1.16px 0.23597px rgba(0,0,0,0.7),0px 1.2px 6.7px #2e4a63;-moz-text-shadow:-0.16px -1.16px 0.23597px rgba(0,0,0,0.7),0px 1.25px 6.7px #2e4a63;-ms-text-shadow:-0.16px -1.16px 0.23597px rgba(0,0,0,0.7),0px 1.25px 6.7px #2e4a63;-o-text-shadow:-0.16px -1.16px 0.23597px rgba(0,0,0,0.7),0px 1.25px 6.7px #2e4a63;font-smooth:always;-webkit-font-smoothing:antialiased;text-decoration:none;}.WimpyPlayerPopup406:active {color:#cecece;background-color:#767676;border-color:rgba(26,26,26,0.38);box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),inset 0px 0px 14px rgba(0,0,0,0.4);-webkit-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),inset 0px 0px 14px rgba(0,0,0,0.4);-moz-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),inset 0px 0px 14px rgba(0,0,0,0.4);-ms-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),inset 0px 0px 14px rgba(0,0,0,0.4);-o-box-shadow:inset 0.16px 0.28px 0.3px rgba(255,255,255,0),inset -0.16px -0.28px 0.4px rgba(246,246,246,0.3),inset 0px 0px 14px rgba(0,0,0,0.4);text-shadow:none;-webkit-text-shadow:none;-moz-text-shadow:none;-ms-text-shadow:none;-o-text-shadow:none;text-decoration:none;}</style>
<a class="WimpyPlayerPopup406" href="javascript:;" onClick="window.open('https://coolvibes-reloaded.com/DjRequests','wimpyPlayerPopupWindow','width=527,height=280')">Requests</a></center>


              <p>
              <center><p>If You Would Like a Tune Played, 
			  <br />
			  Our DJ's Will Hunt It Down And Wack It On!</p>
              </p></center>
    <!-- Presenters Images -->
    <div align="center">
      <!-- MAIN (Center website) -->
      <div class="main">

        <!-- Portfolio Gallery Grid -->
        <div class="row">
          <div class="column">
            <div class="content">
              <img src="images/strawb1.jpg" height="123" width="240"">
              
            </div>
          </div>
          <div class="column">
            <div class="content">
              <img src="images/jason.jpg" height="123" width="240">
              <h3>DJ Reuben</h3>

            </div>
          </div>
          <div class="column">
            <div class="content">
              <img src="images/default-image.jpg" height="123" width="240">
              <h3>Deano</h3>

            </div>
          </div>
          <div class="column">
            <div class="content">
              <img src="images/kayley1.jpg" height="123" width="240">
              <h3>Kayley</h3>

            </div>
          </div>
          <!-- END GRID -->
        </div>

        <!-- END MAIN -->
      </div>
    </div>
    </div>

    <!-- End Presenters Images -->
    </div>

    <!-- END MAIN -->

    <!-- Finish Presenters -->

    <!-- Start Programs -->
    <p style="page-break-before: always">
    <div align="center">
      <div style="height: 40px;width: 300px; background-color: #A00000;color:blue;">
         <i class="fa-fw fas fa-snowflake"></i>Programs!
      </div>
    </div>
    <div class="sidebar s1">

      <a class="sidebar-toggle" title="Expand Sidebar"><i class="fa icon-sidebar-toggle"></i></a>

      <div class="sidebar-content">

        <div class="sidebar-top group">

          <br>

          <html>

          <head>
            <meta name="viewport" content="width=device-width, initial-scale=1">

          </head>

  <body>

<table>
  <tr>
    <th>Kayley's Show</th>
    <th>Strawb's Show</th>
    <th>Ray's Show</th>
    <th>G-Force Reggae</th>
    <th>New Presenter</th>
  </tr>
  <tr>
    <td>New Presenter</td>
    <td>New Presenter</td>
    <td><a href="http://shoutcastservices.uk/DJ-Ray/"target="_blank"><b>Click here for DJ Ray</b></a></td>
    <td>New Presenter</td>
    <td>New Presenter</td>
  </tr>
  <tr>
    <td>New Presenter</td>
    <td>New Presenter</td>
    <td>New Presenter</td>
    <td>New Presenter</td>
    <td>New Presenter</td>
  </tr>
</table>

  </body>

  </html>
  <p style="page-break-before: always">

  <div align="right">
    <html>

    <head>
      <!-- text area -->

      <!-- Start Currently Playing -->
      <div align="right">
        <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
           <i class="fa-fw fas fa-snowflake"></i>Currently Playing!
        </div>
      </div>
      <!-- end currently playing -->

    </head>

    <body>
      <!-- End text area -->

      <p class="round3"><span class="cc_streaminfo" data-type="song" data-username="coolvibes">Loading ...</span>
        <script language="javascript" type="text/javascript" src="http://boogie.vside-radio.com:2199/system/streaminfo.js"></script>
        <br /><img class="cc_streaminfo" data-type="trackimageurl" data-username="coolvibes" /><br /><a href="#" class="cc_streaminfo" data-type="trackbuyurl" data-username="coolvibes"></a><br />
      </p>
      <hr />

      <!-- Start Coolvibes Babe Of The Month! -->
      <div align="right">
        <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
          <h3>Smart Babe Of The Month!</h3>
        </div>
      </div>
	  <p><div align="right">Fancy Having Your image here? Contact us today</p></div>
      <div align="right"><img src="images/" height="100px" width="100px">
	  <div align="right"><a href="mailto:jnlravers@gmail.com">Email:Coolvibes-Reloaded</a></div>
      </div>
  </div>
  <!-- Finish Coolvibes Babe Of The Month! -->
</body>

</html>
</div>
<!-- End Programs -->

<!-- Social -->
<div align="right">
  <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
    <h3>
      <div class="tree" id="mkm">Social!
    </h3>
  </div>
</div>
</div>

<div align="right"><a href="https://facebook.com/coolvibesuk"><img src="https://img.icons8.com/nolan/64/facebook-f.png" style="width:100px;height:100px;"></a>
  <a href="https://www.instagram.com/coolvibesradio/?hl=en-gb"><img src="https://img.icons8.com/nolan/64/instagram-new.png" style="width:100px;height:100px;"></a></center>
  <a href="https://twitter.com/coolvibesradio"><img src="https://img.icons8.com/nolan/64/twitter-squared.png" style="width:100px;height:100px;"></a></center>
</div>
</div>
</div>
</div>

<div align="center">
  <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
     <i class="fa-fw fas fa-snowflake"></i>Entertainment!
  </div>
</div>

<html>

<head>
</head>

<body>
  <div align="center"><img src="images/lol.jpg" height="200px" width="200px">
  
  <div align="center">
      <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
         <i class="fa-fw fas fa-snowflake"></i>Special!
      </div>
    </div>
    </div>
    <div align="center"><img src="images/funny.jpg" height="200px" width="200px">
	<p><center>we saw this on our turkey holiday, thought we'd post it</p></center>
      </div>
	  <br />
	  <div align="center">
      <div style="height: 40px;width: 300px; background-color: #A00000;color:white;">
         <i class="fa-fw fas fa-snowflake"></i>Subscribe to our newsletter for updates!
      </div>
    </div>
    </div>
	<div align="center"><iframe src="https://coolvibes-reloaded.com/email form.html" height="300" width="490" title="Iframe Example"></iframe></div>
  <!-- Footer -->
  <footer class="w3-container w3-padding-32 w3-dark-grey">
    <div class="w3-row-padding">
      <div class="w3-third">

        <div align="center">
          <h3>
            <p>other ways of tuneing in</p>
          </h3>
          <div id="cc_tunein">
            <a href="http://boogie.vside-radio.com:2199/tunein/coolvibes.pls"><img align="absmiddle" src="http://boogie.vside-radio.com:2199/system/images/tunein-pls.png" border="0" alt="Winamp, iTunes" title="Winamp, iTunes" /></a>
            <a href="http://boogie.vside-radio.com:2199/tunein/coolvibes.asx"><img align="absmiddle" src="http://boogie.vside-radio.com:2199/system/images/tunein-asx.png" border="0" alt="Windows Media Player" title="Windows Media Player" /></a>
            <a href="http://boogie.vside-radio.com:2199/tunein/coolvibes.ram"><img align="absmiddle" src="http://boogie.vside-radio.com:2199/system/images/tunein-ram.png" border="0" alt="Real Player" title="Real Player" /></a>
            <a href="http://boogie.vside-radio.com:2199/tunein/coolvibes.qtl"><img align="absmiddle" src="http://boogie.vside-radio.com:2199/system/images/tunein-qtl.png" border="0" alt="QuickTime" title="QuickTime" /></a>
            <center>
              <p>ways of tunein in</p>
            </center>
            <center>
              <p>Download the Get Me Radio! Roku TV App from <a href="https://channelstore.roku.com/en-gb/details/b97490a8fb5758527be0396e43422e42/get-me-radio">here</a> and then search for Coolvibes Radio.
            </center>
            </p>
            <center>
              <p>Download the Get Me Radio! Android App <a href="https://play.google.com/store/apps/details?id=com.getmeradio.gmr">from here</a> and search for Coolvibes Radio on our Mobile App.
            </center>
            </p>
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        </div>

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  </footer>

  <div>
    <center>© Copyright 2021 | 2024 <strong>Coolvibes Reloaded</strong> | All Rights Reserved | Site by <a href="http://www.coolvibes-reloaded.com/" target="_blank">coolvibes</a>
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</body>

</html>
<!-- partial -->
  
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css: 

* {
  box-sizing: border-box;
}

body {
  background-color: #00000;
  color: #00000;
  
  line-height: 2;
  text-align: justify;
  font-family: verdana, arial, helvetica;
}

@media only screen and (min-width: 600px) {
  header {
    margin: 5px auto;
    display: flex;
    align-items: flex-end;
  }
  .logo {
    width: 205%;
  }
  h1 {
    font-size: 3em;
    line-height: 4;
    color: yellow;
    margin-left: 30px;
  }

  h1:hover {
    font-size: 3.2em;
    line-height: 4.2em;
    color: pink;
  }

  nav {
    height: 70px;
    background-color: yellow;
    border-radius: 20px;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    margin: 10px 0 20px 0;
  }

  nav ul {
    display: flex;
    list-style-type: none;
    justify-content: space-between;
  }

  nav ul li {
    margin: 10px 25px;
  }

  nav ul li a {
    background-color: lightblue;
    height: 45px;
    padding: 5px 35px;
    border-radius: 10px;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
  }

  #section1 {
    grid-area: part1;
  }
  #section2 {
    grid-area: part2;
  }
  #section3 {
    grid-area: part3;
  }
  #section4 {
    grid-area: part4;
  }
  #section5 {
    grid-area: part5;
  }
  #section6 {
    grid-area: part6;
  }
  #section7 {
    grid-area: part7;
  }
  #section8 {
    grid-area: part8;
  }
  #section9 {
    grid-area: part9;
  }
  #section10 {
    grid-area: part10;
  }

  main {
    display: grid;
    background: linear-gradient(to bottom, #33ccff 0%, #ff99cc 100%);
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    height: 1300px;
    margin-top: 30px;

    grid-template-areas:
      "part1 part1 part2 part3"
      "part1 part1 part4 part5"
      "part6 part7 part10 part10"
      "part8 part9 part10 part10";
    grid-gap: 20px;
  }

  .card {
    box-shadow: rgb(255, 0, 102) 0px 4px 8px 0px;
    text-align: center;
    background-color: rgb(26, 188, 156);
    padding: 16px;
  }

  .textbox {
    background-color: #0000ff67;
    border-radius: 20px;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    margin: 10px 0 20px 0;
  }

  table {
    font-family: arial, sans-serif;
    border-collapse: collapse;
    width: 100%;
  }

  td,
  th {
    border: 1px solid #dddddd;
    text-align: left;
    padding: 8px;
  }

  tr:nth-child(even) {
    background-color: #dd8383;
  }

  * {
    box-sizing: border-box;
  }

  body {
    font-family: Arial, Helvetica, sans-serif;
  }

  /* Float four columns side by side */
  .column {
    float: left;
    width: 25%;
    padding: 0 10px;
  }

  /* Remove extra left and right margins, due to padding */
  .row {
    margin: 0 -5px;
  }

  /* Clear floats after the columns */
  .row:after {
    content: "";
    display: table;
    clear: both;
  }

  /* Responsive columns */
  @media screen and (max-width: 600px) {
    .column {
      width: 100%;
      display: block;
      margin-bottom: 20px;
    }
  }

  /* Style the counter cards */
  .card {
    box-shadow: 0 4px 8px 0 rgb(26, 188, 156);
    padding: 16px;
    text-align: center;
    background-color: #ff6666;
  }

  * {
    box-sizing: border-box;
  }

  body {
    background-color: #fff;
    padding: 20px;
    font-family: Arial;
  }

  /* Center website */
  .main {
    max-width: 1000px;
    margin: auto;
  }

  h1 {
    font-size: 50px;
    word-break: break-all;
  }

  .row {
    margin: 8px -16px;
  }

  /* Add padding BETWEEN each column */
  .row,
  .row > .column {
    padding: 8px;
  }

  /* Create four equal columns that floats next to each other */
  .column {
    float: left;
    width: 25%;
  }

  /* Clear floats after rows */
  .row:after {
    content: "";
    display: table;
    clear: both;
  }

  /* Content */
  .content {
    background-color: white;
    padding: 10px;
  }

  /* Responsive layout - makes a two column-layout instead of four columns */
  @media screen and (max-width: 900px) {
    .column {
      width: 50%;
    }
  }

  /* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
  @media screen and (max-width: 600px) {
    .column {
      width: 100%;
    }
  }
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #04aa6d;
  color: white;
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {
    position: relative;
  }
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}

table {
  font-family: arial, sans-serif;
  border-collapse: collapse;
  width: 100%;
  background-color: #ff6666;
  box-shadow: 0 4px 8px 0 rgb(26, 188, 156);
}

td, th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
  box-shadow: #ffcc00;
}

tr:nth-child(even) {
  background-color: #dddddd;
  box-shadow: #ffcc00;
}


ul {
  /* Remove the ul default styling */
  list-style: none;
}

li i {
  margin-right: 20px;
}

#00000 is an invalid value. It should be #000 or #000000

Also, I highly suggest you learn the dev tools

There are various reasons why your website’s background colour may not be changing:

  1. CSS Syntax Errors: Check to see if you used the right CSS syntax to change the background colour. In your CSS code, look for any spelling mistakes, missing brackets, or semicolons.

  2. CSS Selector Errors: Make sure you’re changing the background colour of the proper HTML element. If you wish to modify the background colour of the body element, for example, make sure you use the correct selector in your CSS code.

  3. Cascading Order: Determine whether any other CSS styles applied to the same HTML element may be overriding your background colour change. Check that your CSS code is written in the proper order.

  4. Cache problem: Your browser may have cached the previous version of your website, causing the background colour to remain unchanged. Clear your browser’s cache and reload the website.

  5. JavaScript or jQuery: If you’re changing the background colour with JavaScript or jQuery, be sure your code is running properly and there are no issues or conflicts with other scripts.

You should be able to detect and resolve the issue with your website builder backdrop colour by checking these potential causes.

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