/* CSS Resets */
h1, h2, h3, h4, p, nav ul {
    padding: 0;
    margin: 0;
}
nav ul {
    list-style-type: none;
}
img { max-width: 100%; display: block; }
* { box-sizing: border-box;}

/* end Resets */

body {
    font-family: "Roboto", Helvetica, sans-serif;
    color: #000;
    padding: 0 20px;
    background-image: url("sf.jpg");
    background-position: center;
    background-size: cover;
}

.container {
    max-width: 1000px;
    padding-top: 4vh;
    padding-bottom: 4vh;
}

header, footer {
    background-color: rgba(0, 0, 0, 0.9);
    color: #f8f8f8;
    padding: 20px;
}

main {
    padding-top: 40px;
    padding-left: 20px;
    background-color: rgba(255, 255, 255, 0.4)
}


aside {
    background-color: rgba(0, 0, 0, 0.55);
    color: #f8f8f8;
    padding: 20px;
}

aside img {
    margin: 20px auto;
    width: 100%;
}

h1, h2, h3, h4 {
    font-family: monospace;
    font-size: 1.5rem;
}

h1, h2 {
    margin-bottom: .5em;
}

section {
    padding-bottom: 40px;
}

section h2 {
    color:#871515;
}

p {
    line-height: 1.4em;
    margin-bottom: 1em;
}

a:link, a:visited {
    text-decoration: none;
    font-weight: bold;
    color:#000;
}

footer a:link, footer a:visited { color: #f8f8f8; }

a:hover, a:active {
    color:#871515;
}

ul li {
    margin-bottom: 1em;
}


@media only screen and (min-width: 600px) {
    .container{ 
        display: flex;
        flex-wrap: wrap;
    }
    header, footer { width: 100%;}
    main { flex: 2; }
    aside { flex: 1; }
    
}

@media only screen and (min-width: 800px) {
    .container{ margin: auto; }
    main { display: flex;}
    main section { flex: 1; }
}