CSS可以做到这一点，并且在使用多个背景并使用动画更改其位置时非常简单。
.border {
height: 100px;
width: 200px;
background: linear-gradient(90deg, blue 50%, transparent 50%), linear-gradient(90deg, blue 50%, transparent 50%), linear-gradient(0deg, blue 50%, transparent 50%), linear-gradient(0deg, blue 50%, transparent 50%);
background-repeat: repeat-x, repeat-x, repeat-y, repeat-y;
background-size: 16px 4px, 16px 4px, 4px 16px, 4px 16px;
background-position: 0px 0px, 212px 116px, 0px 116px, 216px 0px;
padding: 10px;
transition: background-position 2s;
}
.border:hover{
background-position: 212px 0px, 0px 116px, 0px 0px, 216px 116px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<div class="border">Some text</div>
.border {
height: 100px;
width: 200px;
background: linear-gradient(90deg, blue 50%, transparent 50%), linear-gradient(90deg, blue 50%, transparent 50%), linear-gradient(0deg, blue 50%, transparent 50%), linear-gradient(0deg, blue 50%, transparent 50%);
background-repeat: repeat-x, repeat-x, repeat-y, repeat-y;
background-size: 15px 4px, 15px 4px, 4px 15px, 4px 15px;
background-position: 0px 0px, 200px 100px, 0px 100px, 200px 0px;
padding: 10px;
animation: border-dance 4s infinite linear;
}
@keyframes border-dance {
0% {
background-position: 0px 0px, 300px 116px, 0px 150px, 216px 0px;
}
100% {
background-position: 300px 0px, 0px 116px, 0px 0px, 216px 150px;
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<div class="border">Some text</div>
归功于web-tiki，它有助于修复最初在动画每个循环结束时出现的轻微失真。
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