@media only screen and (max-width: 900px) {
    .menu-collapser {
        position: relative;
        background-color: rgba(0, 0, 0, 0.1);
        color: #333;
        width: 100%;
        height: 48px;
        line-height: 48px;
        font-size: 16px;
        font-weight: bold;
        padding: 0 8px;
        box-sizing: border-box;
        -moz-box-sizing: border-box;
        -webkit-box-sizing: border-box;
    }

    .collapse-button {
        position: absolute;
        right: 8px;
        top: 50%;
        width: 40px;
        background-color: #0E0E0E;
        background-image: linear-gradient(to bottom, #151515, #040404);
        background-repeat: repeat-x;
        border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
        border-radius: 4px 4px 4px 4px;
        border-style: solid;
        border-width: 1px;
        color: #FFFFFF;
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.1) inset, 0 1px 0 rgba(255, 255, 255, 0.075);
        padding: 7px 10px;
        text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
        cursor: pointer;
        font-size: 14px;
        text-align: center;
        transform: translate(0, -50%);
        -o-transform: translate(0, -50%);
        -ms-transform: translate(0, -50%);
        -moz-transform: translate(0, -50%);
        -webkit-transform: translate(0, -50%);
        box-sizing: border-box;
        -moz-box-sizing: border-box;
        -webkit-box-sizing: border-box;
    }

        .collapse-button:hover, .collapse-button:focus {
            background-image: none;
            background-color: #040404;
            color: #FFF;
        }

        .collapse-button .icon-bar {
            background-color: #F5F5F5;
            border-radius: 1px 1px 1px 1px;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
            display: block;
            height: 2px;
            width: 18px;
            margin: 2px 0;
        }

    .topLevel i {
        display: inline-block;
        margin-right: 3px;
    }

    ul.topLevel {
        list-style-type: none;
        margin: 0;
        padding: 0;
        width: 100%;
    }

        ul.topLevel li {
            position: relative;
            display: inline-block;
            background-color: rgba(0, 0, 0, 0.075);
        }

        ul.topLevel > li {
            margin-right: -5px;
            border-left: 1px solid #999;
        }

            ul.topLevel > li:first-child { /*border-left: 0*/
            }

            ul.topLevel > li:last-child {
                margin-right: 0;
            }

        ul.topLevel li a {
            display: block;
            color: #333;
            padding: 12px 16px 12px 16px;
            font-size: 16px;
            font-weight: 400;
            white-space: nowrap;
            text-shadow: 0 1px 0 rgba(255,255,255,0.2);
            transition: background-color 0.5s ease-out;
            -o-transition: background-color 0.5s ease-out;
            -moz-transition: background-color 0.5s ease-out;
            -webkit-transition: background-color 0.5s ease-out;
        }

        ul.topLevel > li.haschild a {
            padding-right: 64px !important;
        }

        ul.topLevel li a:hover {
            /*background-color: #999;*/
            text-decoration: none;
        }

        ul.topLevel li li a {
            min-width: 190px;
        }

        ul.topLevel li .sub-collapser {
            background: none repeat scroll 0 0 rgba(0, 0, 0, 0.075);
            position: absolute;
            right: 0;
            top: 0;
            width: 48px;
            height: 100%;
            text-align: center;
            z-index: 999;
            cursor: pointer;
        }

            ul.topLevel li .sub-collapser:before {
                content: '';
                display: inline-block;
                height: 100%;
                vertical-align: middle;
                margin-right: -0.25em;
            }

            ul.topLevel li .sub-collapser > i {
                color: #333;
                font-size: 18px;
                display: inline-block;
                vertical-align: middle;
            }

        ul.topLevel li ul {
            margin: 0;
            list-style-type: none;
        }

            ul.topLevel li ul li {
                background-color: #BBB;
            }

        ul.topLevel li > ul {
            display: none;
            position: absolute;
            left: 0;
            top: 100%;
            z-index: 999;
            width: 100%;
            overflow: no-content !important;
        }

            ul.topLevel li > ul > li ul {
                display: none;
                position: absolute;
                left: 100%;
                top: 0;
                z-index: 999;
                width: 100%;
            }

        ul.topLevel.collapsed li {
            display: block;
            width: 100%;
            box-sizing: border-box;
            -moz-box-sizing: border-box;
            -webkit-box-sizing: border-box;
        }

            ul.topLevel.collapsed li a {
                display: block;
                border-bottom: 1px solid rgba(0, 0, 0, 0.075);
                box-sizing: border-box;
                -moz-box-sizing: border-box;
                -webkit-box-sizing: border-box;
            }

            ul.topLevel.collapsed li .sub-collapser {
                height: 40px;
            }

            ul.topLevel.collapsed li > ul {
                display: none;
                position: static;
            }
}