* {
    margin: 0;
    border: 0;
    padding: 0;

    font-family: Arial, Helvetica, sans-serif;
}

html, body {
    width: 100%;
    height: 100%;

    display: flex;
}

body {
    flex-direction: column;
    align-items: center;
    justify-content: center;

    background-color: lightseagreen;
}

h1 {
    color: white;
}