Spacing between elements

I'm a complete begginer in CSS and HTML and I'm building my first basic page for training.

What I want do do now is have spacing between two elements without using <br>. Currently I'm using this:

.formClear {
  clear:left;
  height:25px;
}

It works for spacing but do you this a correct way to do it? Would lineheight work better?

line-height: 20px; 

What are your suggestions? Please remember I'm starting to learn :)

Thank you!