Tell us what’s happening:
I’m having difficulty understanding exactly how the “::after” pseudo selector works in this case with the piano…I referenced step 18 because this is the step I’m asked to initially create this selector. I’m now at step 20, where I have to assign the width and height of the “black keys” using this pseudo selector. Once done, the piano, well, actually looks like a piano:
But by way of experimentation, when I remove the “::after” pseudo selector, the piano looks like this:
So I guess what I’m not understanding is how the “::after” pseudo selector actually causes this to look like a piano? But then removing it causes the whole thing to look like complete nonsense? I know the pseudo selector inserts content after the content of the selected element, but removing the pseudo selector causes a change so drastic that I can’t wrap my brain around how it works here… Hopefully I got my question across effectively…any help is appreciated and if you need me to elaborate further please let me know.
Your code so far
<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Piano</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<div id="piano">
<div class="keys">
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
</div>
</div>
</body>
</html>
/* file: styles.css */
html {
box-sizing: border-box;
}
*, *::before, *::after {
box-sizing: inherit;
}
#piano {
background-color: #00471b;
width: 992px;
height: 290px;
margin: 80px auto;
padding: 90px 20px 0 20px;
}
.keys {
background-color: #040404;
width: 949px;
height: 180px;
padding-left: 2px;
}
.key {
background-color: #ffffff;
position: relative;
width: 41px;
height: 175px;
margin: 2px;
float: left;
}
.key.black--key::after {
background-color: #1d1e22;
content: "";
}
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0
Challenge: Learn Responsive Web Design by Building a Piano - Step 18
Link to the challenge:
