title: My content has a bad position and go behind my header
body: <p>I am here because I tried many option to resolve my problem but it doesn't appeart that it works.
  I am explaining:
  In some pages of my websites, I have a strange positioning of my content as you could see here:
  <a href="https://i.stack.imgur.com/aazZ5.png" rel="nofollow noreferrer">my screenshot1</a></p>
  <p>The problem is that my content has a bad position, i can't see correctly and it goes behind my header. In the other page it's perfect but here is not.</p>
  <p>By advance, thank you very much for your help.</p>