<!DOCTYPE?HTML><html><head><meta?charset="utf-8"><title>不定寬塊狀元素水平居中</title><style>/*下面是任務(wù)區(qū)代碼*/.wrap{????background:#ccc;????text-align:?center;????width:?300px;????margin:?0?auto;}</style></head><body><div?class="wrap">????<table>??設(shè)置我所在的div容器水平居中????</table></div></body></html>
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