html {
background-color: black;
}

h1 {
    color: white;
    text-align: center;
    padding: 60px;
}

body{
  padding: 0;
  height: 100vh;
  background: black
}

.headerElements:before {
    content: "";
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}

.container {
    text-align: center;

}

button {
    background-color: black;
    color: white;
    font-size: medium;
}