@media only screen and (max-width :640px) {

    .topbar{
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        z-index: 10;
        background: #1f2a40;
        display: table;
        border-bottom: 1px solid #aaaaaa;
    }

    div.topHeaderElements {
        background: #1f2a40;
        left: 0;
        position: fixed;
        top: 0;
        vertical-align: middle;
        width: 100%;
        z-index: 5;
        text-align: center;
    }
    
    div.mainNavBG {
        box-shadow: none;
        position: fixed;
        z-index: 3;
        background: #172951;
        left: 0;
        top: 60px;
        right: 0;
        bottom: 0;
        display: none;
        width: 100%;
    }
    
    nav.mainNav {
        position: fixed;
        z-index: 4;
        background: #172951;
        text-align: left;
        width: 100%;
        min-height: 0;
        left: 0;
        top: 121px;
        padding-top: 0;
        bottom: 0;
        overflow-y: auto;
    }

    .mainNavPadding {
        display: none;
    }
    
    nav.mainNav ul {
        width: 100%;
        margin-top: 0;
        padding-top: 0;
    }
    
    nav.mainNav ul li {
        display: block;
        float: none;
        border-bottom: 1px #aaaaaa solid;
    }
    
    nav.mainNav ul li a {
        display: block;
        border: 0;
        border-radius: 0;
        color: #ffffff;
        width: auto;
        margin-left: 0;
    }
    
    nav.mainNav ul li:first-child {
    }
    
    nav.mainNav ul li a:hover, nav.mainNav ul li.active a:hover {
        background: rgba(0,0,0,0.25);
    }
    
    nav.mainNav ul li.active a {
        background: transparent;
        color: #f0c82b;
    }
    
    div.sideNav {
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        z-index: 4;
        text-align: center;
        display: none;
        border-bottom: 1px #aaaaaa solid;
    }
    
    div.sideNav ul {
        display: inline-block;
    }
    
    div.sideNav ul li a {
        background: transparent;
        border-radius: 2px;
        line-height: 40px;
        margin: 5px;
        min-width: 90px;
        border: 1px #aaaaaa solid;
        color: #ffffff;
    }
    
    div.sideNav ul li a:hover {
        background: rgba(0,0,0,0.25);
    }
}