Fontawesome icon:

Normal

fa-user

fa-glass

fa-search

fa-times

fa-twitter

Large

fa-user

fa-glass

fa-search

fa-times

fa-twitter

2x Large

fa-user

fa-glass

fa-search

fa-times

fa-twitter

3x Large

fa-user

fa-glass

fa-search

fa-times

fa-twitter

4x Large

fa-user

fa-glass

fa-search

fa-times

fa-twitter

5x Large

fa-user

fa-glass

fa-search

fa-times

fa-twitter