#main {
  width: 110vh;
  margin: 0 auto;
}

#main div {
  display: inline-block;
  width: 50vh;
  height: 50vh;
}

.svg {
  background-image: url('http://www.luc.at/warning.svg');
}

.css {
  background-image: repeating-linear-gradient(135deg, #E2001A, #E2001A 11px, #F8B334 0, #F8B334 22px );
}