css calc font size

1/*Here a possible solution:*/
2
3http://codepen.io/CrocoDillon/pen/fBJxu
4
5p {
6  margin: 0;
7  font-size: calc(4vw + 4vh + 2vmin);
8  /* See:
9   * http://codepen.io/CrocoDillon/pen/jgmwt
10   * For some math behind this
11   */
12}
13/*Font-size is calculated with available size using a function that is not 
14perfect, but may be adjusted to work well in some cases.*/