DIV CSS 佈局教程網

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目錄

[1]元素居中 [2]兩端對齊 [3]底端對齊[4]輸入框按鈕[5]等分布局[6]自適應布局[7]懸掛布局[8]全屏布局

前面的話

　　前面已經詳細介紹過flex彈性盒模型的基本語法和兼容寫法，本文將介紹flex在布局中的應用

 

元素居中

【1】伸縮容器上使用主軸對齊justify-content和側軸對齊align-items

<style>
.parent{
    display: flex;
    justify-content: center;
    align-items: center;
}
</style>

<div class="parent"  style="background-color: lightgrey; height: 100px; width: 200px;">
    <div class="in" style="background-color: lightblue;">DEMO</div>      
</div>

【2】在伸縮項目上使用margin:auto

<style>
.parent{
    display: flex;
}
.in{
    margin: auto;
}
</style>

<div class="parent"  style="background-color: lightgrey;height: 100px;width: 200px;">
    <div class="in" style="background-color: lightblue;">DEMO</div>      
</div>

 

兩端對齊

<style>
.parent{
    display: flex;
    justify-content:space-between
}
</style>

<div class="parent"  style="background-color: lightgrey;height: 100px;width: 200px;">
    <div class="in" style="background-color: lightblue;">DEMO</div>
    <div class="in" style="background-color: lightgreen;">DEMO</div>
    <div class="in" style="background-color: lightcyan;">DEMO</div>
    <div class="in" style="background-color: lightseagreen;">DEMO</div>      
</div>

 

底端對齊

<style>
.parent{
    display: flex;
    align-items: flex-end;
}
</style>

<div class="parent"  style="background-color: lightgrey;height: 100px;width: 200px;">
    <div class="in" style="background-color: lightblue; height:20px;">DEMO</div>
    <div class="in" style="background-color: lightgreen; height:30px;">DEMO</div>
    <div class="in" style="background-color: lightcyan; height:40px;">DEMO</div>
    <div class="in" style="background-color: lightseagreen; height:50px;">DEMO</div>      
</div>

 

輸入框按鈕

<style>
.inputBox{
    display: flex;
    width: 250px;
}
.inputBox-ipt{
    flex: 1;
}
</style>

<div class="inputBox">
  <input class="inputBox-ipt">
  <button class="inputBox-btn">按鈕</button>
</div>

 

等分布局

<style>
body,p{margin: 0;}
.parent{
    display: flex;
}
.child{
    flex:1;
    height: 100px;
}
.child + .child{
    margin-left: 20px;
}
</style>

<div class="parent" style="background-color: lightgrey;">
    <div class="child" style="background-color: lightblue;">1</div>
    <div class="child" style="background-color: lightgreen;">2</div>
    <div class="child" style="background-color: lightsalmon;">3</div>
    <div class="child" style="background-color: pink;">4</div>                
</div>    

 

多列自適應布局

<style>
p{margin: 0;}
.parent{display: flex;}
.left,.center{margin-right: 20px;}
.right{flex: 1;}
</style>

<div class="parent" style="background-color: lightgrey;">
    <div class="left" style="background-color: lightblue;">
        <p>left</p>
        <p>left</p>
    </div>            
    <div class="center" style="background-color: pink;">
        <p>center</p>
        <p>center</p>
    </div>            
    <div class="right"  style="background-color: lightgreen;">
        <p>right</p>
        <p>right</p>
    </div>                    
</div>

 

懸掛布局

<style>        
.box{
    display: flex;
    background-color: lightgrey;
    width: 300px;
}
.left{
    margin-right: 20px;
    background-color: lightblue;
    height: 30px;
}
.main{
    flex:1;
}
</style>

<div class="box">
    <div class="left">左側懸掛</div>
    <div class="main">主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容主要內容</div>    
</div>

 

全屏布局

<style>
body,p{margin: 0;}
body,html,.parent{height: 100%;}
.parent{
    display: flex;
    flex-direction: column;
}
.top,.bottom{
    height: 50px;
}
.middle{
    display: flex;
    flex: 1;
}
.left{
    width: 100px;
    margin-right: 20px;
}
.right{
    flex: 1;
    overflow: auto;
}
.right-in{
    height: 1000px;
}
</style>

<div class="parent" id="parent" style="background-color: lightgrey;">
    <div class="top" style="background-color: lightblue;">
        <p>top</p>
    </div> 
    <div class="middle" style="background-color: pink;">
        <div class="left" style="background-color: orange;">
            <p>left</p>
        </div>     
        <div class="right" style="background-color: lightsalmon;">
            <div class="right-in">
                <p>right</p>
            </div>            
        </div>                    
    </div>              
    <div class="bottom" style="background-color: lightgreen;">
        <p>bottom</p>
    </div>        
</div>