# Configure your placeholders to be fixed or fluid (flex)

Abstract

How to configure your SXA placeholders to be fixed or fluid.

You can configure the placeholders of a theme to be fixed or fluid. In the Content Editor, these settings are called Fixed and Flex and originate from the placeholder styles defined on the grid you are using.

This means that, for example, if you select Flex for the main placeholder, then the container-fluid CSS class is assigned to the div wrapper of that placeholder.

To configure your placeholder to be fixed or fluid:

1. In the content tree, navigate to Media Library, click Themes, and then select the theme you want to configure placeholders for.

2. In the Placeholder settings field, for each placeholder, select one of the following values:

• Flex.

• Fixed.