Standard H tag sizes in pixels
H1 – 36px
H2 – 30px
H3 – 24px
H4 – 18px
H5 – 14px
H6 – 12px
P – 16px
Standard H tag sizes in EM (w3schools.com)
Most browsers will display the <h1> element with the following default values:
- h1 { display: block; font-size: 2em;
- h2 { display: block; font-size: 1.5em;
- h3 { display: block; font-size: 1.17em;
- h4 { display: block; font-size: 1em;
- h5 { display: block; font-size: .83em;
- h6 { display: block; font-size: .67em;