* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    text-align: center;
    font-family: 'Bruno Ace SC', cursive;
  }

html body{
  height: 100vh;
}

body{
  background: linear-gradient(to bottom left, #2196F3, #00BCD4, #c4c7a1, #d381c5, #cc47b6);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

h1{
    display: inline;
    text-transform: uppercase;
    font-size: x-large;
}

header{
  background-image: url('img/colorful-gradient-123-wallpaper-1280x800_3.jpg');
  background-size: cover;
  color: white;
}

#opciones{
    display: flex;
    justify-content: center;
}

main h2{
  margin-bottom: 50px;
}

main h3{
  margin-bottom: 30px;
}

.op{
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.op img{
    height: 300px;
    width: 300px;
}

footer{
    text-align: center;
    background-image: url('img/colorful-gradient-123-wallpaper-1280x800_3.jpg');
    color: white;
    padding: 10px;
}

footer img{
    width: 30px;
    height: 30px;
}

a img:hover {
  transform: scale(1.1);
}

@media (max-width: 1000px) {
  #opciones{
    flex-direction: column;
  }
}