CSS 水平 - 垂直div对齐

Posted 2021-05-23

#mydiv {
	position:absolute;
	top: 50%;
	left: 50%;
	width:350px;
	height:300px;
	margin-top: -150px; /*set to a negative number 1/2 of your height*/
	margin-left: -175px; /*set to a negative number 1/2 of your width*/
	border: 2px solid #2982C6;
	background-color: #FFF;
    text-align: center;
}