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