TmMolStar/src/mol-app/skin/base.scss

@font-face {
    font-family: 'fontello';
    src: url('./fonts/fontello.eot');
    src: url('./fonts/fontello.eot#iefix') format('embedded-opentype'),
         url('./fonts/fontello.woff2') format('woff2'),
         url('./fonts/fontello.woff') format('woff'),
         url('./fonts/fontello.ttf') format('truetype'),
         url('./fonts/fontello.svg#fontello') format('svg');
    font-weight: normal;
    font-style: normal;
}

@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,400italic,700);

.molstar-plugin {
    font-family: "Helvetica Neue", "Source Sans Pro", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.42857143;

    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    @import 'variables';

    // for bootstrap
    $border-radius-base:        0;
    $border-radius-large:       0;
    $border-radius-small:       0;

    @import 'bootstrap';

    @import 'icons';
    @import 'layout';
    @import 'ui';
    @import 'logo';

    .molstar-plugin-content {
        color: $font-color;
    }

    background: $default-background;
}