一.浮動佈局

1.先讓固定寬度的div浮動！使其脫離文件流。
2.margin-left的值等於固定div的寬度相等。

   .aside{
        float: left;
        width: 200px;
        background-color: red;
    }
    .content{
        margin-left: 200px;
        background-color: blue;
    }
    
<div class="aside">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae.
</div>
<div class="content">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae.
</div>
 

二.margin的負值(3個div)

1. 是固定寬度的div脫離文件流。
2. 利用marin負值可以使得，後面的div可以與前面的div 保持同行顯示。

3. 給包裹內容的div加margin-left 可以使得與左邊的文字不重疊

   ``` .aside{ float: left; margin-right: -200px; width: 200px; background-color: red; } .content{ float: right; } .content .inner{ margin-left: 200px; background-color: blue; } <div class="aside"> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> <div class="content"> <div class="inner"> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> ```

   </div>

三.calc()計算屬性

注意：使用calc計算屬性的時候 運算子(- +等等)兩邊必須有空格

1. 注意兩個div必須一左一右浮動。

2. calc的寬度必須要減去的寬度要與固定寬度保持一致。

   ``` .aside{ float: left; width: 200px; background-color: red; } .content{ calc:(100% - 200px); background-color: blue; } ```

   <div class="aside">

   ``` Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> <div class="content"> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> ```

四.flex佈局

1. 需要給父級div設定display: flex屬性。
2. 固定寬度的div設定flex: 0 0 200px即可。

3. 內容區域的div直接寫出flex: 1即可。

   ``` .container{ display: flex; } .aside{ flex: 0 0 200px; background-color: red; } .content{ flex: 1; background-color: blue; } <div class="container"> <div class="aside"> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> <div class="content"> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae. </div> </div> ```

五.左側浮動，右側overflow:hidden

.aside{
    width: 200px;
    float: left;
    background-color: red;
}
.content{
    overflow: hidden;
    background-color: blue;
}
<div class="aside">
        Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae.
    </div>
    <div class="content">
        Lorem ipsum dolor sit amet, consectetur adipisicing elit. Labore provident dolor in voluptatum tempore non, placeat obcaecati totam ut delectus libero excepturi distinctio asperiores odit nobis soluta, esse aspernatur beatae.
    </div>

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原文地址：https://segmentfault.com/a/1190000016694777