body,
.wrapper {
    background-color: #C5D3C8;
}

.item-list .elem .padding::after, .hentry.course::after, .page-header .page-header-content::after, .panel::after, .post-wrap .hentry.format-standard::after, .widget-area .widget::after {
    background: -webkit-linear-gradient(135deg, #C5D3C8 45%, #dddddd 50%, #dddddd 56%, #dddddd 80%);
    background: linear-gradient(315deg, #C5D3C8 45%, #dddddd 50%, #dddddd 56%, #dddddd 80%);
}