如何使用CSS在div中水平居中div?我正在尝试,我让它从左右中心,但我不能让它从顶部和底部居中。
html {
height:100%;
}
body {
padding:0px;
margin: 0px;
height:100%;
}
#openFrame {
position:fixed;
top:0px;
width:100%;
left:0%;
height:100%;
}
.main {
position: absolute;
width: 80%;
max-height: 100%;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
#vid {
width:100%;
max-height:100%;
vertical-align: middle;
}
#bottom {
width:100%;
height:69px;
background-color: green;
background-repeat: no-repeat;
background-position: top center;
background-size: contain;
}
答案 0 :(得分:0)
垂直居中DIV有点棘手。基本上,您必须将position
设置为absolute
,将容器的position
设置为relative
。然后将top
和left
值设置为50%,并通过应用负边距减去要居中的元素宽度/高度的一半。
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style type="text/css">
body, html, #container {
height: 100%;
width: 100%;
}
#container {
position: relative;
}
#content {
width: 300px;
height: 300px;
position: absolute;
top: 50%;
left: 50%;
margin-top: -150px;
margin-left: -150px;
background-color: red;
}
</style>
</head>
<body>
<div id="container">
<div id="content"></div>
</div>
</body>
</html>