icon prefixes materialize code example
Example 1: materialize icons
<link href="https://fonts.googleapis.com/icon?family=Material+Icons"
rel="stylesheet">
Example 2: materialize css icons
<i class="material-icons">add</i>
<link href="https://fonts.googleapis.com/icon?family=Material+Icons"
rel="stylesheet">
<i class="material-icons">add</i>