title: How to style elements with/without using class name
body: <p>I have given a certain section a class name- 'section-team', like that:
  <code>&lt;section class= 'section-team'&gt;</code>. 
  After that, I have been trying to style all the sections in my CSS document by using the selector <code>.section</code>,
  but it seems this call does not refer to the section that was called 'section-team' anymore,
  and in order to style this particular section, I have to use <code>.section-team</code>.
  Is that a feature of the language or am I doing something wrong?</p>