You may want to disable inline module editing, i.e because you don’t want the logo in the HTML module to be editable, as there is a link on the logo that leads back to the homepage.

If you want to disable inline editing you can add a 'noEdit' class to your custom HTML module.

• This is done by going to > 'Extensions' > 'Module Manager' >  searching for your module (in this instance ‘logo’) > selecting the 'Advanced' tab and adding to ‘Header Class’ > ‘noEdit’.