.cux-grid-collapse .ce-zoom-grid-column:nth-last-child(1):not(.even) {
    width: 100%!important;
}

.cux-grid-collapse .ce-zoom-grid-column:nth-last-child(1):not(.even) .ce-zoom-grid-content-inner {
    float: left!important;
}

header{
    z-index: 999!important;
}