水平居中+垂直居中

頁面結構都是:flex

<div class="parent" style="background-color:red;width: 400px;height: 400px;">
    <div class="child" style="background-color:blue;width: 200px;height: 200px;"></div>
</div>

1、水平居中spa

1.設置父元素和子元素,inline-block+text-align:ie6↑code

.parent {
    text-align: center;
}

.child {
    display: inline-block;
}

2.設置子元素,table+margin: ie8orm

.child {
    display:table;
    margin:0 auto;
}

3.設置父元素和子元素,absolute+transform:ie10blog

.parent {
    position:relative;
}
.child {
    position:absolute;
    left:50%;
    transform:translateX(-50%);
}

4.設置父元素和子元素,flex+margin:ie9it

.parent {
    display:flex;
}
.child {
    margin:0 auto;
}

5.設置父元素,flex+justify-content:ie9io

.parent {
    display:flex;
    justify-content:center;
}

 

2、垂直居中table

1.設置父元素,table-cell+vertical-align:ie8form

.parent {
    display:table-cell;
    vertical-align:middle;
}

2.設置父元素和子元素,absolute+transform:ie10class

.parent {
    position:relative;
}
.child {
    position:absolute;
    top:50%;
    transform:translateY(-50%);
}

3.設置父元素,flex+align-items(可用於浮動元素):ie9

.parent {
    display:flex;
    align-items:center;
}

 

3、水平+垂直

1.設置父元素和子元素,absolute+transform:ie10

.parent {
    position:relative;
}
.child {
    position:absolute;
    left:50%;
    top:50%;
    transform:tranplate(-50%,-50%);
}

2.設置父元素和子元素,inline-block+text-align+table-cell+vertical-align:ie8

.parent {
    text-align:center;
    display:table-cell;
    vertical-align:middle;
}
.child {
    display:inline-block;
}

3.設置父元素,flex+justify-content+align-items:ie9

.parent {
    display: flex;
    justify-content: center;
    align-items: center;
}
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