问下border可以设置渐变效果吗

我用linear-gradient 设置不管用。

L路_ZR

2015-10-04

源自：CSS动画实用技巧 3-2

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2 回答

季男
2016-08-15

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>load</title>
    <link rel="stylesheet" href="">
    <style type="text/css" media="screen">
    body {
        background: black;
    }
    
    div {
        width: 200px;
        height: 200px;
        border: 1.1em solid rgba(255, 255, 255, .2);
        border-left-color: #fff;
        border-radius: 100%;
        animation: load 1.1s infinite linear;
    }
    
    @keyframes load {
        0% {
            transform: rotate(0deg);
            border-left-color: rgba(255,255,255,1);
        }
        50% {
            transform: rotate(90deg);
            border-left-color: rgba(255,255,255,.8);
        }
        80% {
            transform: rotate(300deg);
            border-left-color: rgba(255,255,255,.5);
        }
        100% {
            transform: rotate(360deg);
            border-left-color: rgba(255,255,255,1);
        }
    }
    </style>
</head>
<body>
    <div></div>
</body>
</html>