What is the best way to add a custom color to a blank div that is designed with the Bootstrap grid system?

Let's analyze this scenario

<div class="row">
    <div class="col-md-3 col-sm-3 col-xs-3"></div>
    <div class="col-md-6 col-sm-6 col-xs-6"></div>
    <div class="col-md-3 col-sm-3 col-xs-3"></div>
</div>

Imagine that I want to set a background color of #FF0000 to the first div (first column) within the parent div. How can I achieve this? If I simply add style="background-color:red", the background color only applies to the content within it, not to any nested divs with 100% height and width. Why does this happen? What is the correct method to accomplish this?

htmlcsstwitter-bootstrap

Answer №1

Insert a &nbsp;

<div class="col-md-3 col-sm-3 col-xs-3">&nbsp;</div>

Then customize the background color to your liking.

This method is both straightforward and stylish.

Answer №2

When an empty div has no height, you can use height, min-height, padding-top, or padding-bottom to make it visible.

  1. Apply a class for a column.
  2. Apply a class for a row with :first-child.

Bootstrap utilizes col-xs- for screens of any width in the absence of other conditions. Hence, col-md-3 col-sm-3 col-xs-3 is equivalent to col-xs-3.

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');
.make-first-div-red > div:first-child,
.make-it-red {
  background-color: #f00;
  min-height: 30px;
  margin-bottom: 10px;
) 

<div class="row make-first-div-red">
  <div class="col-xs-3"></div>
  <div class="col-xs-6"></div>
  <div class="col-xs-3"></div>
</div>

<div class="row">
  <div class="col-xs-3 make-it-red"></div>
  <div class="col-xs-6"></div>
  <div class="col-xs-3"></div>
</div>

Answer №3

<div class="container">
    <div class="red-box col-md-3 col-sm-3 col-xs-3">Lorem ipsum dolor sit amet</div>
    <div class="col-md-6 col-sm-6 col-xs-6"></div>
    <div class="col-md-3 col-sm-3 col-xs-3"></div>
</div>

Don't forget to apply this custom css .red-box{background:#FF0000} for the desired effect!

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