body {
  margin: 0;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  background-color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  color: white;
}

p,
a,
h1,
h2,
h3,
h4,
h5 {
  margin: 0;
}

header,
footer {
  flex-shrink: 0;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #222;
  background-color: white;
  width: 100%;
  padding-bottom: 2vw;
}

header h1 {
  display: flex;
  justify-content: center;
  font-size: 5vw;
  margin: 3vw 0 1vw 0;
}

a {
  text-decoration: none;
  color: lightblue;
}
a:visited {
  color: lightblue;
}
a:hover {
  color: aqua;
}

hr {
  width: 80%;
  background-color: #aaa;
  border: 0;
  height: 4px;
}

/* Main */
main {
  flex-grow: 1;
  background-color: #333;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  width: 90vw;
  gap: 1vw;
  padding: 1vw;
  padding-top: 2vw;
}

/* Footer, etc. */
footer {
  color: #aaa;
  font-size: 0.5em;
  height: 48px;
  background-color: #222;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshot {
  width: 600px;
}