body {
  width: 100vw;
  height: 100vh;

  font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;

  background-color: #06c;
  background-image: url(background.webp);
  background-size: cover;
  background-position: center;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  color: #eee;
  text-align: center;
  filter: drop-shadow(2px 2px 4px #222);

  margin: 0;
  padding: 0;
}

.glowsquid-animation {
  animation: 3s ease-in-out 0s infinite alternate none running glow;
  filter: blur(2px);
}

@-webkit-keyframes glow {
  0% {
    filter: drop-shadow(0px 0px 10px #61f1cd);
  }
  100% {
    filter: drop-shadow(0px 0px 10px #b8dce9);
  }
}

@keyframes glow {
  0% {
    filter: drop-shadow(0px 0px 10px #61f1cd);
  }
  100% {
    filter: drop-shadow(0px 0px 10px #b8dce9);
  }
}

label::after {
  content: "★";
  font-size: 3em;
}

input[type="radio"]:checked ~ label::after {
  content: "☆";
}

input[type="radio"] {
  left: -1000vw;
  position: absolute;
}