居中面试的方法
一、带宽高的类型
<style>
.father{
500px;
height: 500px;
background-color: blue;
position: relative;
}
.son{
position: absolute;
200px;
height: 200px;
background-color: red;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -100px;
border: 5px solid black;
}
</style>
<body>
<div class="father">
<div class="son"></div>
</div>
</body>
<style>
.father{
500px;
height: 500px;
background-color: blue;
position: relative;
}
.son{
position: absolute;
200px;
height: 200px;
background-color: red;
border: 5px solid black;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
</style>
<body>
<div class="father">
<div class="son"></div>
</div>
</body>
二、不带宽高
<style>
.father{
500px;
height: 500px;
background-color: blue;
position: relative;
}
.son{
position: absolute;
background-color: red;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
}
</style>
<body>
<div class="father">
<div class="son">box</div>
</div>
</body>
<style>
.father{
500px;
height: 500px;
background-color: blue;
display: flex;
justify-content: center;
align-items: center;
}
.son{
background-color: red;
}
</style>
</head>
<body>
<div class="father">
<div class="son">box111</div>
</div>
</body>