Hay que añadir en una etiqueta Style:
<style>
@font-face {
font-family: 'Material Icons';
font-style: normal;
font-weight: 400;
src: url(../font/MaterialIcons-Regular.ttf);
src: local('Material Icons'),
local('MaterialIcons-Regular'),
}
</style>
Tambien hay que añadir:
.material-icons {
font-family: 'Material Icons';
font-weight: normal;
font-style: normal;
font-size: 24px; /* Preferred icon size */
display: inline-block;
line-height: 1;
text-transform: none;
letter-spacing: normal;
word-wrap: normal;
white-space: nowrap;
direction: ltr;
/* Support for all WebKit browsers. */
-webkit-font-smoothing: antialiased;
/* Support for Safari and Chrome. */
text-rendering: optimizeLegibility;
/* Support for Firefox. */
-moz-osx-font-smoothing: grayscale;
/* Support for IE. */
font-feature-settings: 'liga';
}
<span class="material-icons">face</span>
<span class="material-icons">face</span><span class="material-icons">house</span><span class="material-icons">settings</span><span class="material-icons">accessibility_new</span>
<span class="material-icons md-50">face</span>
Tenemos que crear nuestra propia clase en CSS.
.material-icons.md-50 { font-size: 50px; }
<span class="material-icons md-coloreado">face</span>
Tenemos que crear nuestra propia clase en CSS.
.material-icons.md-coloreado{
background-color: #5d6d61;
color: #b0ff57
}