body, html {
  margin: 0;
  padding: 0;
}

#main {
  box-sizing: border-box;
  min-height: 100vh;
  padding: 35px 10vw;
  color: #222;
}

* {
  font-family: 'Times New Roman', Times, serif;
}

*:not(h1, h2, h3, h4, h5, h6) {
  font-size: 1.02rem;
}

#return {
  position: absolute;
  top: 5px;
  left: 5px;
}

a {
  text-decoration: underline;
}

a:link {
  color: forestgreen;
}

a:visited {
  color: orchid;
}

p {
  margin: 7px 0px;
  line-height: 1.4;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Verdana, sans-serif;
  margin: 0;
  margin-bottom: 5px;
}

ul {
  margin: 0;
  padding-left: 40px;
}

input[type="checkbox"] {
  margin-left: 0;
}

#dark-mode {
  position: fixed;
  top: 5px;
  right: 5px;
  opacity: 0;
}

#dark-mode:checked ~ #main {
  background-color: #222;
  color: white;
}

label[for="dark-mode"] {
  position: fixed;
  top: 3px;
  right: 3px;
  font-size: 1.3rem;
}

#dark-mode + label[for="dark-mode"]::after {
  content: "🌙";
}

#dark-mode:checked + label[for="dark-mode"]::after {
  content: "☀️";
}