@font-face {
    font-family: 'Roboto Slab';
    font-style: normal;
    font-weight: 100;
    font-display: swap;
    src: url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.eot);
    src: url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.eot?#iefix) format('embedded-opentype'),
         url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.woff2) format('woff2'),
         url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.woff) format('woff'),
         url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.ttf) format('truetype'),
         url(https://fonts.is-hw.de/roboto-slab/roboto-slab-100.svg#RobotoSlab) format('svg');
}