动画CSS border-left-width属性

Animate CSS border-left-width property

要使用CSS在border-left-width属性上实现动画，您可以尝试运行以下代码

例

现场演示

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<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 500px;
height: 300px;
background: yellow;
border: 10px solid yellow;
border-bottom-right-radius: 100px;
border-bottom-width: 30px;
background-image: url('https://www.tutorialspoint.com/latest/testrail.png');
animation: myanim 3s infinite;
background-position: bottom left;
background-size: 50px;
}
@keyframes myanim {
40% {
background-color: maroon;
border-bottom-color: green;
border-bottom-right-radius: 50px;
border-bottom-width: 50px;
border-color: red;
border-left-color: blue;
border-left-width: 35px;
}
}
</style>
</head>
<body>
<p>
Performing Animation for border left width
</p>

</body>
</html>