::selection {
  background-color: black;
  color: white;
}

main {
  display: flex;
  width: 100%;
  height: 100%;
}

ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

h1 {
  margin: 0;
}

nav {
  flex-grow: 1;
  line-height: 1.5;
  background-color: yellow;
  padding: 1rem;
}

section.content {
  flex-grow: 7;
  padding: 1rem;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 1rem;
  height: 100vh;
  background-color: aliceblue;

  font-size: 75%;
  font-family: system-ui, sans-serif;
}

header {
  padding: 0 1rem 1rem;
}

* {
  box-sizing: border-box;
}

footer {
  padding: 1rem 1rem 0;
}

a {
  color: black;
  text-decoration: none;
  transition: 100ms;
}

a:hover {
  color: deeppink;
}