body {
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    font-size: 16px;
    color:maroon;
}
header {
    background-color: gray;
    height: 60px;
}
header h1 {
    font-size: 36px; 
    color: rgb(24, 13, 117); 
    line-height: 60px;
}
ul {
    list-style-type: circle;
}
ol {
    list-style-type: lower-roman;
}
li {
    font-style: italic;
    line-height: 20px;
    margin-bottom: 12px;
    color: maroon;
    font-size: 16px;
}
a {
    color: rgb(2, 90, 24);
}
nav {
    background-color: lavender;
}
nav li {
    display: inline; 
    list-style: none;
}  
nav a {
    display: inline-block; 
    padding: 10px; 
    color: rgb(2, 90, 24);
}   
h1 {
    color: crimson; 
    font-size: 140%; 
    font-weight: bold; 
    margin-bottom: 20px;
}
h2 {
    color: crimson; 
    font-size: 130%; 
    font-weight: bold; 
    margin-bottom: 20px;
}
h3{
    color: crimson; 
    font-size: 120%; 
    font-weight: bold; 
    margin-bottom: 20px;
}
p {
    line-height: 20px; 
    margin-bottom: 12px;    
}
footer {
    background-color: black; 
    color: deepskyblue; 
    font-size: 85%; 
    padding: 10px; 
    position: absolute;
    bottom: 0px;
}
main {
    float: left; 
    box-sizing: border-box; 
    padding: 20px; 
    width: 70%;
}
aside {
    float: left; 
    box-sizing: border-box; 
    padding: 20px; 
    width: 30%;
}
.image {
    max-height: 500px; 
    max-width: 90%;
}
div#content {
    overflow: auto;
    display: flex;
}
div#mobile-nav-button {
    position: absolute;
    top: 0px;
    right: 0px;
    width: 44px;
    height: 44px;
    font-weight: bold;
    line-height: 44px;
    text-align: center;
    cursor: pointer;
    display: none;
}
@media only screen and (max-width: 800px) {
    main {
        float: none; 
        width: 100%;
    }
    aside {
        float: none; 
        width: 100%;
    }
    div#mobile-nav-button {
        display: block;
    }
    #main-nav {
        position: absolute;
        top: 60px;
        height: 100%;
        width: 0;
        transition: width .5s;
        z-index: 100;
    }
    #main-nav li {
        overflow: hidden;
    }
    #main-nav.show{
        width: 250px;
    }
    #main-nav ul li {
        display: block;
    }
}