.mdi:before, .mdi-set {
    display: inline-block;
    font: normal normal normal 24px / 1 "Material Design Icons";
    font-size: inherit;
    text-rendering: auto;
    line-height: inherit;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.mdi-plus-thick:before {
    content: url('/static/icons/plus-thick.svg');
}