/*
 * Per fer una rectangle responsiu amb contingut
 * https://spin.atomicobject.com/css-responsive-square/
 * */
.square {
  position: relative;
  width: 50%;
}

.square:after {
  content: "";
  display: block;
  padding-bottom: 100%;
}

.content {
  position: absolute;
  width: 100%;
  height: 100%;
}