Styling your div elements in CSS to shrink in width relative to their parent container

Question

Styling your div elements in CSS to shrink in width relative to their parent container

.container {
    max-width: 750px;
    height: 100px;
    background-color: red;
    margin: 0;
    padding: 0;
}
.box1 {
    width: 100px;
    height: 100%;
    float: left;
    background-color: black;
}
.box2 {
    width: 650px;
    height: 100%;
    float: left;
    background-color: black;
}

<div class="container">
    <div class="box1"></div><div class="box2"></div>
</div>

I am trying to ensure that .box2 shrinks proportionally as .container decreases in size. Unfortunately, setting max-width: 650px; does not seem to be effective. Instead of wrapping onto a new line when the browser window narrows, I want .box2 to maintain its maximum dimensions.

html css

Answer 1

Answer №1

Strengthen those muscles like this:

.strengthen {
    display: flex;
}
.strengthen-block {
    flex: 1 1;
}

Check out the code snippet below:

.strengthen {
    display: flex;
}
.strengthen-block {
    flex: 1 1;
}
br {
    clear: both;
}
.container {
    max-width: 750px;
    height: 100px;
    background-color: red;
    margin: 0;
    padding: 0;
}
.elem1 {
    width: 100px;
    height: 100%;
    float: left;
    background-color: black;
}
.elem2 {
    width: 650px;
    height: 100%;
    float: left;
    background-color: black;
}

<div class="container">
    <div class="elem1"></div><div class="elem2"></div>
</div>
<br>
<strong>with strength...</strong>
<div class="container strengthen">
    <div class="elem1 .strengthen-block"></div><div class="elem2 .strengthen-block"></div>
</div>

Cross browser support for flex:

Answer 2

Strengthen those muscles like this:

.strengthen {
    display: flex;
}
.strengthen-block {
    flex: 1 1;
}

Check out the code snippet below:

.strengthen {
    display: flex;
}
.strengthen-block {
    flex: 1 1;
}
br {
    clear: both;
}
.container {
    max-width: 750px;
    height: 100px;
    background-color: red;
    margin: 0;
    padding: 0;
}
.elem1 {
    width: 100px;
    height: 100%;
    float: left;
    background-color: black;
}
.elem2 {
    width: 650px;
    height: 100%;
    float: left;
    background-color: black;
}

<div class="container">
    <div class="elem1"></div><div class="elem2"></div>
</div>
<br>
<strong>with strength...</strong>
<div class="container strengthen">
    <div class="elem1 .strengthen-block"></div><div class="elem2 .strengthen-block"></div>
</div>

Cross browser support for flex:

Answer 3

Answer №2

The issue at hand arises from the fixed width set on the second block, causing a break when both blocks can no longer fit in a single row.

To address this using floats, one solution is to utilize the calc() CSS function to determine the width of the parent minus 100px from the first block. This results in the following property for the second block:

width: calc(100% - 100px);

View jsfiddle example

Sample Code:

.parent {
  //max-width: 750px;
  height: 100px;
  background-color: tomato;
  margin: 0;
  padding: 0;
}
.block1 {
  width: 100px;
  height: 100%;
  float: left;
  background-color: purple;
}
.block2 {
  width: calc(100% - 100px);
  max-width: 650px;
  height: 100%;
  float: left;
  background-color: dodgerblue;
}

<div class="parent">
  <div class="block1"></div>
  <div class="block2"></div>
</div>

Alternatively, another approach is to eliminate floats and implement flexbox.

Check out the flexbox example here

.parent {
  //max-width: 750px;
  height: 100px;
  background-color: tomato;
  margin: 0;
  padding: 0;
  display: flex;
}
.block1 {
  flex: 0 0 100px;
  height: 100%;
  background-color: purple;
}
.block2 {
  flex-grow: 1;
  max-width: 650px;
  height: 100%;
  background-color: dodgerblue;
}

<div class="parent">
  <div class="block1"></div>
  <div class="block2"></div>
</div>

For further information on flexbox, refer to this resource.

Answer 4

The issue at hand arises from the fixed width set on the second block, causing a break when both blocks can no longer fit in a single row.

To address this using floats, one solution is to utilize the calc() CSS function to determine the width of the parent minus 100px from the first block. This results in the following property for the second block:

width: calc(100% - 100px);

View jsfiddle example

Sample Code:

.parent {
  //max-width: 750px;
  height: 100px;
  background-color: tomato;
  margin: 0;
  padding: 0;
}
.block1 {
  width: 100px;
  height: 100%;
  float: left;
  background-color: purple;
}
.block2 {
  width: calc(100% - 100px);
  max-width: 650px;
  height: 100%;
  float: left;
  background-color: dodgerblue;
}

<div class="parent">
  <div class="block1"></div>
  <div class="block2"></div>
</div>

Alternatively, another approach is to eliminate floats and implement flexbox.

Check out the flexbox example here

.parent {
  //max-width: 750px;
  height: 100px;
  background-color: tomato;
  margin: 0;
  padding: 0;
  display: flex;
}
.block1 {
  flex: 0 0 100px;
  height: 100%;
  background-color: purple;
}
.block2 {
  flex-grow: 1;
  max-width: 650px;
  height: 100%;
  background-color: dodgerblue;
}

<div class="parent">
  <div class="block1"></div>
  <div class="block2"></div>
</div>

For further information on flexbox, refer to this resource.

Answer 5

Answer №3

1.) To maintain a consistent relationship between the two widths, consider utilizing percentage values for their width properties:

100px = 100/750*100 percent of 750px = 13.3333%
650px = 650/750*100 percent of 750px = 86.6666%

2.) Alternatively, if you want the 100px to remain fixed while allowing the second div to shrink, apply this rule to the second DIV:

width: calc(100% - 100px);

Answer 6

1.) To maintain a consistent relationship between the two widths, consider utilizing percentage values for their width properties:

100px = 100/750*100 percent of 750px = 13.3333%
650px = 650/750*100 percent of 750px = 86.6666%

2.) Alternatively, if you want the 100px to remain fixed while allowing the second div to shrink, apply this rule to the second DIV:

width: calc(100% - 100px);

Answer 7

Answer №4

If you're looking to avoid using 'flexbox' and 'calc', there is another technique that involves utilizing margins to address your issue. This method will work effectively if you only need block2 and the parent block to be flexible.

Check out the example below:

.parent {
    max-width: 500px;
    height: 100px;
    background-color: red;
    margin: 0;
    padding: 0;
}
.block1 {
    width: 100px;
    height: 100%;
    float: left;
    background-color: blue;
}
.block2 {
    margin-left: 100px;
    height: 100%;
    background-color: red;
}

<div class="parent">
    <div class="block1"></div><div class="block2"></div>
</div>

In the code for block 2, I've included a margin that corresponds to the width of block 1. Additionally, I removed the 'float' property from block 2.

Answer 8

If you're looking to avoid using 'flexbox' and 'calc', there is another technique that involves utilizing margins to address your issue. This method will work effectively if you only need block2 and the parent block to be flexible.

Check out the example below:

.parent {
    max-width: 500px;
    height: 100px;
    background-color: red;
    margin: 0;
    padding: 0;
}
.block1 {
    width: 100px;
    height: 100%;
    float: left;
    background-color: blue;
}
.block2 {
    margin-left: 100px;
    height: 100%;
    background-color: red;
}

<div class="parent">
    <div class="block1"></div><div class="block2"></div>
</div>

In the code for block 2, I've included a margin that corresponds to the width of block 1. Additionally, I removed the 'float' property from block 2.

Styling your div elements in CSS to shrink in width relative to their parent container

Answer №1

Answer №2

Answer №3

Answer №4

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