*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  font-size: 18px;
}
body {
  margin: 10px 0;
  background-color: hsl(60, 8%, 85%);
  color: hsl(0, 0%, 25%);
}
h1 {
  font-family: 'Roboto Slab', serif;
  font-size: 2.5em;
  text-align: center;
  background-color: hsla(0, 0%, 100%, 0.25);
  padding: 0.5rem;
  border: 1px solid hsla(0, 0%, 100%, 0.5);
  box-shadow: 0 0 4px 1px hsla(0, 0%, 0%, 0.25);
}
article {
  margin-bottom: 5.5rem;
}
p {
  margin: 1rem;
}
nav {
  font-family: "Dosis", sans-serif;
  position: fixed;
  display: flex;
  justify-content: center;
  background-color: transparent;
  font-size: 1em;
  bottom: 0;
  left: 0;
  right: 0;
}
nav > a {
  display: flex;
  flex-flow: column;
  flex: 0 1 auto;
  align-self: flex-end;
  align-items: center;
  color: hsl(0, 0%, 85%);
  text-decoration: none;
  background-color: hsl(0, 0%, 18%);
  border: 1px solid transparent;
  width: 5em;
  height: 4.5em;
  line-height: 1.2;
  transition: all 0.2s ease-in;
  min-width: min-content;
}
nav > a:hover {
  height: 6.0em;
  background-color: hsl(210, 50%, 25%);
  border: 1px solid hsla(0, 0%, 0%, 0.25);
}
header {
  font-size: 18px;
  margin: 10px;
}