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

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

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

    background: darkred;
    height: 100vh;
    border: 4vh solid olive;
}

.link {
    color:cadetblue;
    text-decoration: none;
}