gogs/public/less/_language_statistics.less

.statistics {
	position: relative;
	height: 2.6667em;
	border: 1px solid #dedede;
	border-radius: 5px;
	background: #fff;

	/**
	 * 3D box effect technique
	 *
	 * http://codepen.io/rachsmith/pen/cojza
	 */
	.box3d {
		perspective: 1000px;
		overflow: hidden;
		border-radius: 5px 5px 0 0;
		padding: 0 1.5em;
	
		.toppanel, .bottompanel {
			transform-origin: 50% 0;
			transition-delay: 125ms;
			
			/**
			 * this timing function from
			 * http://codepen.io/sbchewitt/pen/KpPZMx
			 */
			transition: all 0.5s cubic-bezier(.57,-0.42,.46,1.4);
		}
		.toppanel {
			position: relative;
			transform-style: preserve-3d;
			background: #fff;
		}
		.bottompanel {
			transform: rotateX(-90deg) translateZ(0);
			position: absolute;
			width: 100%;
			height: 100%;
			left: 0;
			top: 100%;
			background: #999;
		}

		&.focusstate {
			.toppanel {
				transform: rotateX(90deg) translateY(-22px);
				transition-delay: 0s;
			}
			.bottompanel {
				background: #fff;
				transition-delay: 0s;
			}
		}

		.navbar {
			list-style: none;
			margin: 0;
			padding: 0;
			display: flex;
			justify-content: space-around;
			padding: 0.5em;

			.navitem {
				flex: 0 1 auto;
			}
			.navitem a {
				color: #222;
				text-decoration: none;
			}
		}
		.repo .navitem:hover a {
			color: #4183c4;
		}
	
		.lang {
			.navitem {
				&::before {
					background-color: currentColor;
					content: '';
					display: inline-block;
					width: 0.75em;
					height: 0.75em;
					border-radius: 50%;
					vertical-align: middle;
					margin: 0 0.25em 2px 0;
					cursor: pointer;
				}
				&::after {
					content: attr(data-percent);
					margin-left: 0.5em;
					color: #555;
				}
			}
		}
	}

	.underbar {
		position: absolute;
		left: 0;
		bottom: 0;
		padding-top: 5px;
		height: 8px;
		width: 100%;
		bottom: 0;
		display: flex;
		cursor: pointer;
		border-radius: 0 0 5px 5px;
		overflow: hidden;
		opacity: 0.6;
		transition: all 0.5s cubic-bezier(.57,-0.42,.46,1.4);
		&:hover {
			opacity: 0.8;
		}
		span {
			font-size: 0;
			background-color: currentColor;
		}
	 }

	.box3d.focusstate ~ .underbar, .underbar:hover {
		opacity: 1;
		padding: 0;
		padding-top: 3px;
	}
}