body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  font-family: sans-serif;
  background-color: white;
}

div.content {
  padding: 16px;
}

input {
  display: none;
}

button {
  border: none;
  outline: none;
  border-radius: 10px;
  text-decoration: none;
  color: midnightblue;
  background-color: lightgray;
  cursor: pointer;
}

button:active {
  background-color: darkgray;
}

label {
  display: inline-block;
  border: none;
  outline: none;
  border-radius: 10px;
  text-decoration: none;
  color: midnightblue;
  background-color: lightgray;
  cursor: pointer;
}

label:active {
  background-color: darkgray;
}

video {
  border: 1px solid grey;
}

img {
  width: 200px;
  height: 150px;
}

@media screen and (min-width: 481px) {
  button,
  label {
    width: 240px;
    height: 50px;
    font-size: large;
  }

  label {
    line-height: 50px;
  }

  video {
    width: 400px;
    height: 300px;
  }
}

@media screen and (max-width: 480px) {
  button,
  label {
    width: 60%;
    height: 40px;
    font-size: medium;
  }

  label {
    line-height: 40px;
  }

  video {
    width: 80%;
    height: auto;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background-color: #1c1c1e;
  }

  h2 {
    color: ghostwhite;
  }

  p.note {
    color: ghostwhite;
  }
}