.regresar {
  display: block;
  position: absolute;
  margin-top: 40px;
  margin-left: 40px;
  background-color: #162E44;
  color: #fff;
  text-decoration: none;
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  font-size: 30px;
  cursor: pointer;
}

