CSS Questions & Answers Logo
CSS Questions & Answers Part of the Q&A Network
Q&A Logo

How do I create a full-width background color that spans the entire viewport?

Asked on Aug 26, 2025

Answer

To create a full-width background color that spans the entire viewport, you can use CSS to set the background color on the `` or `` element, ensuring it covers the entire visible area.
<!-- BEGIN COPY / PASTE -->
    <style>
      body {
        margin: 0; /* Remove default margin */
        background-color: lightblue; /* Set desired background color */
      }
    </style>
    <!-- END COPY / PASTE -->
Additional Comment:
  • Setting the margin to 0 on the body removes any default spacing that might prevent the background from reaching the edges.
  • The background color will automatically extend to fill the entire viewport width and height.
  • You can change "lightblue" to any color you prefer, using color names, hex codes, or RGB values.
✅ Answered with CSS best practices.

← Back to All Questions
The Q&A Network