Using :focus to style outer div?

Question

When I begin writing text in the textarea, I want the outer div, with a class box, to have it\'s border turned solid instead of dashed, but somehow the :focus doesn\'t apply

Answer 1

DIV elements can get focus if set the tabindex attribute. Here is the working example.

#focus-example > .extra {
  display: none;
}
#focus-example:focus > .extra {
  display: block;
}

  
Focus me!
  
Hooray!

For more information about focus and blur, you can check out this article.

Update: And here is another example using focus to create a menu.

#toggleMenu:focus {
  outline: none;
}
button:focus + .menu {
  display: block;
}
.menu {
  display: none;
}
.menu:focus {
  display: none;
}

  Menu
  

    
Home
    
About Me
    
Contacts