Expand a div to fill the remaining width

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一生所求

I want a two-column div layout, where each one can have variable width e.g.

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21条回答

礼貌的吻别

2020-11-21 23:03

Use calc:

.leftSide {
  float: left;
  width: 50px;
  background-color: green;
}
.rightSide {
  float: left;
  width: calc(100% - 50px);
  background-color: red;
}

<div style="width:200px">
  <div class="leftSide">a</div>
  <div class="rightSide">b</div>
</div>

The problem with this is that all widths must be explicitly defined, either as a value(px and em work fine), or as a percent of something explicitly defined itself.

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难免孤独

2020-11-21 23:03

<html>

<head>
  <style type="text/css">
    div.box {
      background: #EEE;
      height: 100px;
      width: 500px;
    }
    div.left {
      background: #999;
      float: left;
      height: 100%;
      width: auto;
    }
    div.right {
      background: #666;
      height: 100%;
    }
    div.clear {
      clear: both;
      height: 1px;
      overflow: hidden;
      font-size: 0pt;
      margin-top: -1px;
    }
  </style>
</head>

<body>
  <div class="box">
    <div class="left">Tree</div>
    <div class="right">View</div>
    <div class="right">View</div>
    <div style="width: <=100% getTreeWidth()100 %>">Tree</div>
    <div class="clear" />
  </div>
  <div class="ColumnWrapper">
    <div class="ColumnOneHalf">Tree</div>
    <div class="ColumnOneHalf">View</div>
  </div>

</body>

</html>

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别跟我提以往

2020-11-21 23:04

Use the CSS Flexbox flex-grow property to achieve this.

html, body {
  height: 100%;
}
body {
  display: flex;
}
.second {
  flex-grow: 1;
}

<div style="background: #bef;">Tree</div>
<div class="second" style="background: #ff9;">View</div>

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囚心锁ツ

2020-11-21 23:04
flex-grow - This defines the ability for a flex item to grow if necessary. It accepts a unitless value that serves as a proportion. It dictates what amount of the available space inside the flex container the item should take up.

If all items have flex-grow set to 1, the remaining space in the container will be distributed equally to all children. If one of the children has a value of 2, the remaining space would take up twice as much space as the others (or it will try to, at least). See more here
```
.parent {
  display: flex;
}

.child {
  flex-grow: 1; // It accepts a unitless value that serves as a proportion
}

.left {
  background: red;
}

.right {
  background: green;
}
```
```
<div class="parent"> 
  <div class="child left">
      Left 50%
  </div>
   <div class="child right">
      Right 50%
  </div>
</div>
```
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囚心锁ツ

2020-11-21 23:04

You can use W3's CSS library that contains a class called rest that does just that:

<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">

<div class="w3-row">
  <div class="w3-col " style="width:150px">
    <p>150px</p>
  </div>
  <div class="w3-rest w3-green">
    <p>w3-rest</p>
  </div>
</div>

Don't forget to link the CSS library in the page's header:

<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">

Here's the official demo: W3 School Tryit Editor

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小蘑菇

2020-11-21 23:05

Pat - You are right. That's why this solution would satisfy both "dinosaurs" and contemporaries. :)

.btnCont {
  display: table-layout;
  width: 500px;
}

.txtCont {
  display: table-cell;
  width: 70%;
  max-width: 80%;
  min-width: 20%;
}

.subCont {
  display: table-cell;
  width: 30%;
  max-width: 80%;
  min-width: 20%;
}

<div class="btnCont">
  <div class="txtCont">
    Long text that will auto adjust as it grows. The best part is that the width of the container would not go beyond 500px!
  </div>
  <div class="subCont">
    This column as well as the entire container works like a table. Isn't Amazing!!!
  </div>
</div>

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