.mainHeader nav {
    font-family: 'Open Sans', sans-serif;
    height: 40px;
    border-top-left-radius: 5px;
    -moz-border-top-left-radius: 5px;
    -webkit-border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    -moz-border-top-right-radius: 5px;
    -webkit-border-top-right-radius: 5px;
    margin-top: 2%;
}

.mainHeader nav ul {
    list-style: none;
    margin: 0 auto;
}

.mainHeader nav ul li {
    float: left;
    display: inline;
}

.mainHeader nav a:link, .mainHeader nav a:visited {
    color: #444;
    display: inline-block;
    padding: 10px 25px;
    height: 20px;
}

.mainHeader nav a:hover, .mainHeader nav a:active,
.mainHeader nav .active a:link, .mainHeader nav .active a:visited {
    background-color: #74a71d;
    text-shadow: none;
}

.mainHeader a {
    transition: background-color .2s ease-out, .2s ease-in;
}