.button {
    background: lightgrey;
    border: none;
    color: black;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
}

body {
    margin: auto;
    font-size: large;
    max-width: 960px;
    padding: 1em;
}

header {
    margin: auto;
    text-align: center;
}

@media only screen and (max-width: 600px) {
    h1 {
        font-size: x-large;
    }

    h2 {
        font-size: large;
    }
}

nav {
    text-align: center;
}

.left-nav {
    text-align: left;
}