body {
    width: 80%;
    max-width: 900px;
    margin: auto;
    margin: 10px;
    background-color: white;
}

header, footer {
    background-color: rgb(255, 255, 255);
    padding: 10px 60px;
}

nav {
    background-color:white;
    margin: -3px;
}

ul.navh { 
    list-style-type: none; 
    margin: 1;
    padding: 0;
    background: #ffffff;
    overflow: hidden;
}

li.navh {
    float: left;
    width: 25%;
}


li.navh a { 
    display: block;
    color: black;
    padding: 14px 16px;
    text-decoration: none;
    text-align: center;
}

li.navh a:hover {
    display: block;
    text-decoration: bold;
    border: 1px solid #000000;
}


main {
    background-color: white;
    padding: 10px 40px;
}

.dropdown {
    display: inline-block;
    position: relative;
    background: #ffffff;
    color: black;
    padding: 12px 16px;
}

.dropdown-content {
    display: none; 
    position: absolute; 
    z-index: 10;
    background: #ffffff;
    padding: 5px 15px;
    min-width: 150px;
    text-align: center;
    margin-top: 12px;
    margin-left: -16px;
}

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