body {
    margin: auto;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

nav li {
    float: left;
}

nav li a {
    display: block;
    color: #9d9d9d;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none !important;
}

.active, nav li a:hover, .dropdown:hover .dropbtn {
    background-color: #111;
    color: white;
}

table {
    border-spacing: 0;
    border-collapse: collapse;
}

.font25 {
    font-size: 25px;
}

@media screen and (max-width: 600px) {
    nav li a {
    font-size: 16px;
    padding: 8px 8px;
    }
}

@media screen and (max-width: 400px) {
    nav li a {
    font-size: 14px;
    padding: 6px 6px;
    }
}

main {
    padding: 10px 20px;
}

.feature li {padding-bottom: 8px;}

.summary strong {font-size: 20px;}
.summary span {font-size: 16px;}

h2 {background: #FFA100; color: #fff; padding: 10px; font-weight: bold;}

footer {
    font-size: 13px;
    color: #888;
    border-top: 1px solid #eee;
    margin-top: 25px;
    text-align: center;
    padding: 10px;

}