盒子水平垂直居中的几种方法
HTML
<div id="box">
<div class="box"></div>
</div>
style
1、position + 负外边距
#box{
width: 300px;
height: 300px;
border: 1px solid red;
position: relative;
}
.box{
width: 100px;
height: 100px;
background-color: blueviolet;
position: absolute;
top: 50%;
left: 50%;
margin-left: -50px;
margin-top: -50px;
}
2、position + margin: auto
#box{
width: 300px;
height: 300px;
border: 1px solid red;
position: relative;
}
.box{
width: 100px;
height: 100px;
background-color: blueviolet;
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
margin: auto;
}
3、position + transform
#box{
width: 300px;
height: 300px;
border: 1px solid red;
position: relative;
}
.box{
width: 100px;
height: 100px;
background-color: blueviolet;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}
4、父盒子(flex)
#box{
width: 300px;
height: 300px;
border: 1px solid red;
position: flex;
justify-content: center; /* 水平居中*/
align-items: center; /* 垂直居中、*/
}
.box{
width: 100px;
height: 100px;
background-color: blueviolet;
}
5、父盒子(flex) + 子盒子(center)
#box{
width: 300px;
height: 300px;
border: 1px solid red;
position: flex;
justify-content: center; /* 水平居中*/
}
.box{
width: 100px;
height: 100px;
background-color: blueviolet;
align-self: center;
}
来源:CSDN
作者:雪月凡画
链接:https://blog.csdn.net/weixin_45939247/article/details/103540260