* {
    margin: 0;
    padding: 0;
}

html, body {
    text-align: center;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}

h1 {
    font-size: x-large;
    margin: 50px auto 5px;
}

hr {
    background-color: silver;
    border: 0px;
    border-radius: 2px;
    margin: 0px auto 50px;
    width: 100px;
    height: 3px;
}

#wrap {
    background-color: whitesmoke;
    text-align: left;
    margin: auto;
    padding: 30px;
    width: 90vw;
    max-width: 800px;
}

#wrap h2 {
    margin: 20px 0px 10px;
}

#backtotop {
    font-weight: bold;
    margin: 50px 0px;
}

#backtotop a {
    color: inherit;
}