/* comment */
@font-face {
  font-family: "Libertinus";
  src: url("fonts/libertinusmono-regular.otf");
}

header {
  color: aliceblue;
  text-align: center;
  background-color: black;
  position: fixed;
  padding: 10px 15px 10px 5px;
  top: 0;
  left: 0;
  width: 200px; 
  height: 100vh; 
}

#star1{
  position: absolute;
  width: 50px;
  top: 120px;
  left: 150px;
  animation: pulsate 6s ease-in-out infinite alternate-reverse;
}

#star2{
  position: absolute;
  width: 50px;
  top: 160px;
  left: 20px;
  animation: pulsate 3s ease-in-out infinite reverse;
}

#star3{
  position: absolute;
  width: 50px;
  top: 280px;
  left: 150px;
  animation: pulsate 9s ease-in-out infinite alternate;
} 

@keyframes pulsate {
  0%   { transform: scale(1) rotate(30deg); opacity: 0; }
  50%  { transform: scale(1.3) rotate(0deg); opacity: 1; }
  100% { transform: scale(1) rotate(30deg); opacity: 0; }
}

body{
  background-color: blue;
  font-family: "Libertinus";
}

main {
  margin-left: 200px;
   padding-left: 20px;
   
}

.ignis {
  background-color: grey;
  color: darkred;
 
}

.aer {
  background-color: grey;
  color: lightskyblue;
}

.terra {
  background-color: black;
  color: green;
}

.aqua {
  background-color: black;
  color: blue;
}

.boton {
  background-color: inherit;
  font-size: 30px;
  font-weight: bolder;
  border: 2px solid whitesmoke;
  text-align: center;
  margin-top: 60px;
  margin-bottom: 120px;
  margin-right: 5px;
  margin-left: 10px;
  padding: 10px;
}

#uno {
  display: flex;
    min-height: 100vh;
align-items: flex-start;
padding: 30px;
}