body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(
    circle at top,
    #0f84b7 0%,
    #0b5e83 45%,
    #072f43 100%
  );
  color: #fff;
  font-family: Arial, sans-serif;
}

hgroup {
  text-align: center;
}

h1 {
  font-size: clamp(2rem, 10vw, 5rem);
  margin: 0;
}

h1 + p {
  font-size: 1.25rem;
  margin: 0;
}

h2 {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  margin: 0;
}

form {
  text-align: center;
}

.player-list {
  animation: color-change 10s infinite alternate linear;
  background-color: rgb(0, 0, 0, 0.25);
  border: solid 2px #c30;
  border-radius: 0.25rem;
  box-sizing: border-box;
  color: #fff;
  display: block;
  field-sizing: content;
  font-family: monospace;
  font-size: 0.833333333333333rem;
  inline-size: 100%;
  margin: 0.5rem auto;
  max-inline-size: 8rem;
  min-block-size: 4rem;
  overflow: hidden;
  padding: 0.5rem;
  resize: none;
}

#start {
  animation: color-change 10s infinite alternate linear;
  background-color: #c30;
  border: solid 4px #fff;
  border-radius: 2rem;
  box-sizing: border-box;
  color: #fff;
  cursor: pointer;
  display: block;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0.5rem auto;
  padding: 1rem 2rem;
}

@keyframes color-change {
  0% {
    filter: hue-rotate(-90deg);
  }
  100% {
    filter: hue-rotate(0deg);
  }
}