app/assets/stylesheets/material-icons.scss
/* fallback */
@font-face {
font-family: 'Material Icons';
font-style: normal;
font-weight: 400;
src: url(https://dneslov.org/fonts/Material-Icons.woff2) format('woff2');
}
.material-icons {
font-family: 'Material Icons';
font-weight: normal;
font-style: normal;
font-size: 2rem;
line-height: 1;
letter-spacing: normal;
text-transform: none;
display: inline-block;
white-space: nowrap;
word-wrap: normal;
direction: ltr;
-moz-font-feature-settings: 'liga';
-moz-osx-font-smoothing: grayscale;
}