HTMLify

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

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

body {
  font-family: "sans";
  align-items: center;
  background-color: #19172e;
  color: #fff;
  height: 100vh;
  justify-content: center;
  margin: 0;
}

h1 {
  top: 0;
  text-align: center;
  padding: 2%;
  font-size: 1.2rem;
}

img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 300px;
  border-radius: 3%;
}

footer {
  text-align: center;
  color: white;
  font-size: 1rem;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin-bottom: 0;
  padding: 5px;
  line-height: 3vh;
}

footer a:visited {
  color: inherit;
}