In CSS how do you change font size of h1 and h2

Question

In a word press twenty eleven theme. I want to change the size of headings When I wrap my headings around h1 and h2 tags as follows

My h1 heading          


        

Answer 1

 h1 { font-size: 150%; }
 h2 { font-size: 120%; }

Tune as needed.

Answer 2

h1 {
  font-weight: bold;
  color: #fff;
  font-size: 32px;
}

h2 {
  font-weight: bold;
  color: #fff;
  font-size: 24px;
}

Note that after color you can use a word (e.g. white), a hex code (e.g. #fff) or RGB (e.g. rgb(255,255,255)) or RGBA (e.g. rgba(255,255,255,0.3)).

Answer 3

What have you tried? This should work.

h1 { font-size: 20pt; }
h2 { font-size: 16pt; }