案例代码：
Html代码
代码语言：javascript
复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Colored Markers</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<h1>CSS Color Markers</h1>
<div class="container">
<div class="marker red">
<div class="cap"></div>
<div class="sleeve"></div>
</div>
<div class="marker green">
<div class="cap"></div>
<div class="sleeve"></div>
</div>
<div class="marker blue">
<div class="cap"></div>
<div class="sleeve"></div>
</div>
</div>
</body>
</html>
CSS代码
代码语言：javascript
复制h1 {
text-align: center;
}
.container {
background-color: rgb(255, 255, 255);
padding: 10px 0;
}
.marker {
width: 200px;
height: 25px;
margin: 10px auto;
}
.cap {
width: 60px;
height: 25px;
}
.sleeve {
width: 110px;
height: 25px;
background-color: rgba(255, 255, 255, 0.5);
border-left: 10px double rgba(0, 0, 0, 0.75);
}
.cap, .sleeve {
display: inline-block;
}
.red {
background: linear-gradient(rgb(122, 74, 14), rgb(245, 62, 113), rgb(162, 27, 27));
box-shadow: 0 0 20px 0 rgba(83, 14, 14, 0.8);
}
.green {
background: linear-gradient(#55680D, #71F53E, #116C31);
box-shadow: 0 0 20px 0 #3B7E20CC;
}
.blue {
background: linear-gradient(hsl(186, 76%, 16%), hsl(223, 90%, 60%), hsl(240, 56%, 42%));
box-shadow: 0 0 20px 0 hsla(223, 59%, 31%, 0.8);
}
效果图：
