title: How to add css files to a custom module in Odoo?
body: <p>How can I add css files to my custom module to change xml views? I found <a href="https://www.odoo.com/es_ES/forum/help-1/question/how-to-change-existing-css-creating-a-new-module-46099">this post</a> but the solution is not working.</p>
  
  <p>I want modify all the elements from my module, such as forms, lists, inputs, etc.</p>