本质上，我需要弄清楚如何创建一个大的黑框，然后在它上面我想有文本"MyCloud"；用"；我的"是白色的；云；是另一种颜色。我终于得到了不同颜色的文本，但现在黑框已经消失了。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>MyCloud</title>
<link rel="stylesheet" href="stylesheet.css">
</head>
<body>
<h1>
<div myCloud>
<span style="color: red">My</span><span style="color: blue;">Cloud</span>
</div>
</h1>
<h2>Completed Projects:</h2>
<h3>Contact Us</h3>
</body>
</html>
*{
background-color: rgb(255, 255, 255);
}
.myCloud{
background-color: black;
}
h2{
background-color: #6331a8;
text-align: center;
color: white;
}
h3{
color: black;
background-color: #599ed4;
text-align: right;
text-decoration: underline;
padding-right: 30px;
}
您忘记了代码HTML中的某些内容。
尝试在myCloud之前添加类像这样：
class="myCloud"
您当前拥有：
<h1>
<div myCloud>
<span style="color: red">My</span><span style="color: blue;">Cloud</span>
</div>
</h1>
看起来您忘记了class=而不是myCloud。
试试这个：
<h1>
<div class="myCloud">
<span style="color: red">My</span><span style="color: blue;">Cloud</span>
</div>
</h1>
编辑：您将所有背景色设置为白色，样式表顶部为*样式。
.myCloud{
background-color: black;
}
h2{
background-color: #6331a8;
text-align: center;
color: white;
}
h3{
color: black;
background-color: #599ed4;
text-align: right;
text-decoration: underline;
padding-right: 30px;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>MyCloud</title>
<link rel="stylesheet" href="stylesheet.css">
</head>
<body>
<h1 class="myCloud">
<span style="color: red">My</span><span style="color: blue;">Cloud</span>
</h1>
<h2>Completed Projects:</h2>
<h3>Contact Us</h3>
</body>
</html>