alex-advent-calendar/css/pater.css

.pater {
	position: fixed;
	width: 320px;
	height: auto;
	bottom: 0;
	left: 0;
	padding: 1em 2em 2em 2em;
	font-family: 'Helvetica', Arial, sans-serif;
	color: #000;
	font-size: 0.85em;
	pointer-events: none;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	z-index: 10000;
}

.pater:hover {
	pointer-events: auto;
}

.pater__title {
	line-height: 1;
	position: relative;
	z-index: 10;
	padding: 10px 0 8px 52px;
	cursor: default;
	color: #262628;
	background: url(../img/sponsor/webydo-logo.png) no-repeat 0% 50%;
	-webkit-transform: translateY(40px);
	transform: translateY(40px);
	opacity: 0;
	-webkit-transition: -webkit-transform 0.3s, opacity 0.3s;
	transition: transform 0.3s, opacity 0.3s;
}

.pater:hover .pater__title {
	opacity: 1;
	-webkit-transform: translateY(0);
	transform: translateY(0);
}

.pater__hidden {
	position: relative;
	z-index: 100;
	opacity: 0;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}

.pater:hover .pater__hidden {
	opacity: 1;
}

.pater__description {
	line-height: 1.2;
	color: #747474;
	cursor: default;
}

.pater__sponsor {
	font-size: 0.875em;
	position: relative;
	display: block;
	z-index: 10;
	cursor: default;
	color: #262628;
	-webkit-transform: translate3d(139px,0px,0);
	transform: translate3d(139px,0px,0);
	-webkit-transition: -webkit-transform 0.3s, color 0.3s;
	transition: transform 0.3s, color 0.3s;
}

.pater:hover .pater__sponsor {
	color: #262628;
	-webkit-transform: translate3d(0,0,0);
	transform: translate3d(0,0,0);
}

.pater__button {
	background: #fec841;
	color: #262628;
	cursor: pointer;
	padding: 0.65em 1.25em;
	border-radius: 1.5em;
	display: inline-block;
	position: absolute;
	right: 0;
	top: 100%;
	margin: 0.5em 0 0;
	z-index: 100;
	line-height: 1;
	-webkit-transition: background-color 0.2s, color 0.2s;
	transition: background-color 0.2s, color 0.2s;
}

.pater__button:hover {
	background: #000;
	color: #fff;
}

.pater__effect {
	position: absolute;
	pointer-events: auto;
	width: 260px;
	top: -4.5em;
	left: 0;
	-webkit-transform: rotate(-22.5deg);
	transform: rotate(-22.5deg);
}

.pater__effect img {
	display: block;
	float: left;
	position: relative;
	-webkit-transition: -webkit-transform 0.3s;
	transition: transform 0.3s;
}

.pater__effect img:nth-child(2) {
	margin: 4em 0 0 -3em;
}

.pater__effect img:nth-child(3) {
	margin: -7em 0 0 0.5em;
}

.pater:hover .pater__effect img:nth-child(1) {
	-webkit-transform: translate3d(0,-110px,0);
	transform:  translate3d(0,-110px,0);
}

.pater:hover .pater__effect img:nth-child(2) {
	-webkit-transform: translate3d(0,-130px,0);
	transform: translate3d(0,-130px,0);
}

.pater:hover .pater__effect img:nth-child(3) {
	-webkit-transform: translateY(55px);
	transform: translateY(55px);
}

.pater-responsive {
	position: fixed;
	display: none;
	bottom: 0;
	width: 100%;
	left: 0;
	z-index: 1000;
	font-size: 0.85em;
	padding: 1.5em 1em 1.5em 5em;
	color: #000;
	font-family: 'Helvetica Neue', Arial, sans-serif;
	background: #fff url(../img/sponsor/webydo-logo.png) no-repeat 0.75em 50%;
}

@media screen and (max-width: 50.75em) {
	.pater {
		display: none;
	}
	.pater-responsive {
		display: block;
	}
}