#header{
    color:navy;
    text-align:center;
    padding: 30px;

}

body{
    font-size: 18px;
    font-family:'Roboto';
    background-color:whitesmoke;
    align-content:center;
    align-self: center;
    padding: 90px;
} 

.content {
    padding-left: 80px;
    padding-right: 80px;
}

h1 { 
    display: block;
    font-size: 3em;
    margin-top: 0.67em;
    margin-bottom: 0.67em;
    margin-left: 0;
    margin-right: 0;
    font-weight: bold;
}

h2 {
    display: block;
    font-size: 1.5em;
    margin-top: 0.83em;
    margin-bottom: 0.83em;
    margin-left: 0;
    margin-right: 0;
    font-weight: bold;
}

h3 { 
    display: block;
    font-size: 1.17em;
    margin-top: 1em;
    margin-bottom: 1em;
    margin-left: 0;
    margin-right: 0;
    font-weight: bold;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: saddlebrown;
}

li {
    float: left;
    border-right: 1px solid #bbb;
}

li:last-child {
    border-right: none;
}

li a, .dropbtn {
    display: inline-block;
    color: white;
    text-align: left;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover, .dropdown:hover .dropbtn {
    background-color: burlywood;
}

li.dropdown {
    display: inline-block;
}

pre {
    font-family: "Courier New", Courier, monospace;
    background-color: #EDEDED;
    padding: 50px;
    border: 1px dashed #666;
    font-size: 14px;
}

table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
}
th, td {
    padding: 5px;
}


.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    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;
    text-align: left;
}

.dropdown-content a:hover {background-color: #f1f1f1}

.dropdown:hover .dropdown-content {
    display: block;
}

#coverpage {
    background-color: whitesmoke;
    text-align: center;
    padding: 30px;
}

.wrap {
    text-align:center;
    display:block;
}

img {
    width:70%;
    margin-top: 25px;
    margin-bottom: 25px;
}

img_logo {
    width:30%;
}
.img_index {
    width:100%;
}