html {
    background-color: #fff;
    background-image: url("../img/imagedoc-lightnoise.png");
}   

body {
    color: #222;
    font-size: 14px;
    font-family: "Liberation Sans", Arial, sans-serif;
    line-height: 1.5;
    margin: 0;
}

h1, h2, h3, h4 {
    display: inline;
}

.navbar-top-head {
    padding: 12px;
    background: #472886;
    background: linear-gradient(0deg, rgba(71,40,134,1) 0%, rgba(81,24,195,1) 100%);
}

.navbar-top-inner {
    max-width: 900px;
    margin: 0 auto;
}

.navbar-top-inner a {
    color: #f8f8f8;
    text-decoration: none;
}

.grid-container {
    display: grid;
    grid-template-columns: minmax(150px, auto) auto;
    grid-gap: 12px;

    max-width: 900px;
    margin: 0 auto;
    padding: 12px;
}

main img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid #aaa;
}

nav {
    background: #eee;
    border: 1px solid #aaa;
}

nav > ul {
    padding-right: 12px;
}

a {
    color: rgb(0, 0, 255);
}

footer {
    background: #ddd;
    border-top: 1px solid #aaa;
    padding: 12px;
}

.footer-inner {
    max-width: 900px;
    margin: 0 auto;
}

@media only screen and (max-width: 600px) {
    .grid-container {
        grid-template-columns: auto;
    }
}