Iris/src/scss/components/_context-menu.scss

.context-menu {
	position: fixed;
	left: 0;
	top: 0;
	z-index: 98;
	background: $dark_grey;
	color: #FFFFFF;

	.menu-item {
		display: block;
		padding: 8px 12px;
		width: 120px;
		box-sizing: border-box;

		&:not(:first-child){
			border-top: 1px solid lighten($dark_grey, 8%);
		}

		&:hover {
			cursor: pointer;
			background: lighten($dark_grey, 5%);

			.submenu {
				display: block;
			}
		}

		.submenu {
			display: none;
			position: absolute;
			left: 120px;
			top: 0;
			max-height: 400px;
			overflow-y: scroll;			
			background: lighten($dark_grey, 5%);

			.menu-item:hover {
				background: lighten($dark_grey, 10%);
			}
		}
	}
}