HTMLify

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

@font-face {
  font-family: "sans";
  src: url(font/sans.ttf);
}

body {
  font-family: "sans";
  background: #19172e;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  padding-left: 2rem;
  padding-right: 2rem;
  color: white;
}

h1 {
  position: absolute;
  top: 0;
  padding-top: 5%;
}

#container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 400px;
}

.square {
  background-color: #19172e;
  box-shadow: 0 0 2px #ffffff;
  margin: 2px;
  width: 16px;
  height: 16px;
  transition: 2s ease;
}

.square:hover {
  transition-duration: 0s;
}

footer {
  background-color: #19172e;
  text-align: center;
  font-size: 1rem;
  position: absolute;
  bottom: 0;
  margin-bottom: 0;
  padding: 5px;
  line-height: 3vh;
}
footer a:visited {
  color: inherit;
}

@media (max-width: 350px) {
  h1 {
    font-size: 1.2rem;
  }
}