* {
    margin: 0;
}
body {
        background-color: slategray;
        width: 500px;
        margin: 0 auto;
    }
    div#header {
        background-color: lavender;
        padding: 10px;
        margin-top: 40px;
        font: bold 20pt 'Lucida Console',monaco,monospace;
        text-align: center;
        width: 615px;
        height: 100px;
    }
    h1 {
        padding: 20px;
    }
    div#menu {
        background-color: firebrick;
        padding: 10px 0;
        top: 160px;
        width: 185px;
        height: 685px;
        position: absolute;
        z-index: 1;
    }
    nav a {
        display: block;
        color: linen;
        text-decoration: none;
        padding: 2px 1px 2px 1px;
        font: bold 15pt 'Courier New',courier,monospace;
    }
    nav a::before {
        content: "[";
    }
    nav a::after {
        content: "]";
    }
    nav a:hover {
        color: papayawhip;
        background-color:darkolivegreen;
    }    
    .dropbtn {
        background-color: firebrick;
        color: linen;
        padding: 12px;
        font: bold 15pt 'Courier New',courier,monospace;
        border: none;
        cursor: pointer;
    }
    .dropbtn:hover {
    	  color: papayawhip;
        background-color: darkolivegreen;
    }
    .dropdown {
        position: relative;
        display: inline-block;
    }
    .dropdown-content {
        display: none;
        position: relative;
        background-color: linen;
        min-width: 160px;
        box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    }
    .dropdown-content a {
        color: black;
        padding: 12px 16px;
        text-decoration: none;
        display: block;
    }
    .dropdown-content a:hover {
        background-color: darkolivegreen;
    }
    .dropdown:hover .dropdown-content {
        display: block;
    }
    h2 {
        color: slategray;   
    }
    div#content {
        background-color: linen;
        padding: 10px;
        top: 0px;
        left: 185px;
        position: relative;
        width: 430px;
        height: 700px;
        overflow: scroll;
    }
    div#footer {
        background-color: darkolivegreen;
        color: white;
        font: 'Lucida Console',monaco,monospace;
        position: relative;
        top: -15px;
        padding: 10px;
        width: 615px;
    }
   
    div#content img:nth-of-type(3) {
        width: 440px;
        margin: 0 auto;
    }
}