I built a site with the theme Corporate Clean. I wanted to add some custom CSS (override some colors, fonts etc.) so I added this to the files in the folder /sites/all/themes/corporateclean/...). Now an update for the theme became available and I lost all my custom styles (I have them in source control so no panic).

What is the best way to add custom css that doesn't disappear when a new theme version is published? I prefer file based. I've seen CSS Injector but that CSS would also be gone if I start from a new database.

1 Answer 1


What you want to do is create a sub-theme so that updating your contributed theme does not overwrite custom changes you've made.

  • Thanks, this works very well. However they have a slideshow banner in the template that is visible on the home page. If I want to adapt that they instruct me to edit the template. I know that my sub theme can override the whole page.tpl.php file but is there clean a way to only override the banner section and get the updates for the rest of the template? The banner is not a block btw...
    – Koen
    Jun 1, 2012 at 18:09
  • What kind of slideshow is it? If you use something like Views Slideshow or Views Galleriffic you shouldn't need to touch the page template.
    – acouch
    Jun 4, 2012 at 21:11
  • It is built in the template, check out the demo page: demo.drupalizing.com/?theme=corporateclean
    – Koen
    Jun 5, 2012 at 9:00
  • Generally you would never ever put content like that directly into a template like this theme does: drupalcode.org/project/corporateclean.git/blob/refs/heads/… In this case since they have done that you are forced to overwrite the entire template file. You could save yourself the trouble next time by adding this content as a variables using: api.drupal.org/api/drupal/includes%21theme.inc/function/… but you would still need to cut and paste into their page.tpl.php
    – acouch
    Jun 5, 2012 at 13:00

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