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div{width: 200px;height: 200px;display: inline-block;}.test1,.test2{background-image: linear-gradient(45deg,blue 25%,transparent 25%),linear-gradient(-45deg,blue 25%,transparent 25%),linear-gradient(45deg,transparent 75%,blue 75%),linear-gradient(-45deg,transparent 75%,blue 75%);}.test2{ background-size: 20% 20%;} </style><div class="test1"></div> <div class="test2"></div>转载于:https://blog.51cto.com/2488451/2062494