body{
    margin: 0px;
    padding: 0px;
    background-color: #696969; /*dimgray*/
    font-family: sans-serif;
}

p.caption {
    font-size: small;
    text-align: center;
}

p.author_info {
    font-size: large;
    font-style: italic;
}

.question {
    font-size: large;
    background-color: #e0e0e0;
}

#header, #nav, #content, #footer{
    background-color: white;
    margin-top: 0px;
    margin-left: auto;
    margin-bottom: 0px;
    margin-right: auto;
}

#header img{
    border: 0px;
    width: 100%;
}

#content img {
    display: block;
    margin-left:auto;
    margin-right:auto;
}

#nav ul{
    list-style-type: none;
    margin: 0px;
    padding: 0px;
}

#nav ul, #footer{
    background-color: #B22222; /*firebrick*/
    background-image: url('https://proper-testing.github.io/img/gradient.jpg');
}

#nav li{
    display: inline;
}

#nav a{
    display: inline-block;
    border-right: 2px solid black;
    padding: 5px;
    color: white;
    text-decoration: none;
}

#nav li.current a{
    background-color: white;
    color: black;
}

#nav a:active{
    color: black;
}

#nav a:hover{
    background-color: red;
}

#pri_navbar{
    font-size: large;
}

#sec_navbar{
    font-size: small;
}

#nav, #header{
    max-width: 900px;
    padding: 0px;
}

#content, #footer{
    max-width: 880px;
    padding: 3px 10px 3px 10px;
}

#content a{
    color: #B22222; /*firebrick*/
}

#content a:active{
    color: white;
}

#footer{
    font-size: x-small;
    color: white;
}

#footer ul{
    list-style-type: none;
    margin: 0px;
    padding: 0px;
}

#footer a{
    color: white;
}

@media screen and (max-width: 600px){
    #header{
	display: none;
    }
}

figure {
        margin-left: auto
}