@font-face {
  font-family: 'Futura';
  src: url("../fuentes/futura/futura\ light\ bt.ttf");
  font-weight: lighter;
  font-style: normal;
}
.icon-expand:before {
  content: "";
  font-family: 'Futura';
  font-weight: lighter;
  font-style: normal;
  letter-spacing: 1.5px;
  line-height: 1.1;
}
.icon-next:before {
  content: ">";
  font-size: clamp(2rem, 2vw + 1rem, 3.5rem);
}
.icon-back:before {
  content: "<";
  font-size: clamp(2rem, 2vw + 1rem, 3.5rem);
}
.icon-close:before {
  content: "ⓧ";
  font-size: clamp(0.5rem, 1vw + 1rem, 2.5rem);
}