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

  height: 100vh;
  width: 100vw;

  user-select: none;

  background: #1b1b1b;
  color: #f1f1f1;

  font-family: sans-serif;
}

html {
  font-size: 62.5%;
}

body {
  font-size: 1.6rem;

  display: flex;
  flex-direction: column;

  align-items: center;
  justify-content: center;
}

h1,
h2 {
  font-weight: 500;
}

nav {
  display: flex;
  align-items: center;
}

.line {
  height: 0;
  width: 10em;

  border-top: 0.1rem solid #4a4a4a;
}

a {
  display: flex;
  align-items: center;
  justify-content: center;

  height: 15em;
  width: 15em;

  border: 0.1em solid #252525;
  border-radius: 1em;

  background: #151515;

  margin: 1em;
}

a:hover,
a:active {
  box-shadow: 0 0 0.5em 0em #8885;
}

a>img {
  max-height: 6em;
  max-width: 6em;
}

@media (max-width: 1000px) {
  nav {
    flex-direction: column;
  }
}

@media (max-width: 1400px) {
  .line {
    display: none;
  }
}