CSS Flex 布局

.container {
    display: flex;
    width: 800px;
    height: 150px;
}
.item {
    font-size: 50px;
    font-weight: 500;
    width: 200px;
    text-align: center;
}

一、容器属性，子元素排列

.container {
    display: flex;
    width: 800px;
    height: 150px;
    flex-direction: row;
}

row

 

row-reverse

 

 column

 

column-reverse

二、容器属性，子元素折行

.container {
    border: 2px solid black;
    display: flex;
    width: 700px;
    height: 150px;
    flex-direction: column-reverse;
    flex-wrap: wrap;
}

wrap

wrap-reverse

 

三、容器属性，子元素对齐方式

.container {
    border: 2px solid black;
    display: flex;
    width: 1200px;
    height: 200px;
    flex-direction: row;
    justify-content:start;
}

flex-start

end

 

center

 

space-between

 

space-around

 

.container {
    border: 2px solid black;
    display: flex;
    width: 1200px;
    height: 200px;
    flex-direction: row;
    align-items: flex-start;
}

flex-start

flex-end

center

baseline

 

stretch （子元素没有指定高度）

四、子元素属性，空间多余，分配给子元素。默认是0，所有元素都不分配

<div class="item" style="background-color: aqua;">1</div>
<div class="item" style="background-color: gold;flex-grow: 2;">2</div>
<div class="item" style="background-color: hotpink;flex-grow: 1;">3</div>
<div class="item" style="background-color: GreenYellow;">4</div>
<div class="item" style="background-color: Indigo;">5</div>
<div class="item" style="background-color: LightCyan;">6</div>
<div class="item" style="background-color: SlateGray;">7</div>
<div class="item" style="background-color: SaddleBrown;">8</div>

 空间不足，需要减少子元素尺寸，默认都是1，平均减少

<div class="item" style="background-color: aqua;">1</div>
<div class="item" style="background-color: gold;flex-shrink: 2;">2</div>
<div class="item" style="background-color: hotpink;">3</div>
<div class="item" style="background-color: GreenYellow;">4</div>
<div class="item" style="background-color: Indigo;">5</div>
<div class="item" style="background-color: LightCyan;">6</div>
<div class="item" style="background-color: SlateGray;">7</div>
<div class="item" style="background-color: SaddleBrown;">8</div>