openpower.foundation_sw_dev/themes/openpowerfoundation/assets/css/changelog.scss

.changelog {
	white-space: nowrap;
	overflow-x: hidden;
	margin: 10px 0px 10px 0px;
}
.changelog ol {
	font-size: 0;
	width: 100vw;
	padding: 100px 0;
	transition: all 1s;
}
.changelog ol li {
	position: relative;
	display: inline-block;
	list-style-type: none;
	width: 160px;
	height: 3px;
	background: #000000;
}
.changelog ol li:last-child {
	width: 280px;
}
.changelog ol li:not(:first-child) {
	margin-left: 14px;
}
.changelog ol li:not(:last-child)::after {
	content: '';
	position: absolute;
	top: 50%;
	left: calc(100% + 1px);
	bottom: 0;
	width: 12px;
	height: 12px;
	transform: translateY(-50%);
	background: #007aad;
}
.changelog ol li div {
	position: absolute;
	left: calc(100% + 7px);
	width: 200px;
	padding: 15px;
	font-size: 1rem;
	white-space: normal;
	color: white;
	background: #007aad;
}
.changelog ol li div::before {
	content: '';
	position: absolute;
	top: 100%;
	left: 0;
	width: 0;
	height: 0;
	border: 2px solid #007aad;
}
.changelog ol li:nth-child(odd) div {
	top: -16px;
	transform: translateY(-100%);
}
.changelog ol li:nth-child(odd) div::before {
	top: 100%;
	border-width: 8px 8px 0 0;
	border-color: #007aad transparent transparent transparent;
}
.changelog ol li:nth-child(even) div {
	top: calc(100% + 16px);
}
.changelog ol li:nth-child(even) div::before {
	top: -8px;
	border-width: 8px 0 0 8px;
	border-color: transparent transparent transparent #007aad;
}
.changelog #version {
	display: block;
	font-size: 1.2rem;
	font-weight: bold;
	//margin-bottom: 8px;
}
.changelog #description {
	display: block;
	font-size: 0.7rem;
	margin-bottom: 8px;
}
.changelog .arrows {
	display: flex;
	justify-content: center;
	margin-bottom: 20px;
}
.changelog .arrows .arrow__prev {
	margin-right: 20px;
}
.changelog .disabled {
	opacity: .5;
}
.changelog .arrows img {
	width: 45px;
	height: 45px;
}

@media screen and (max-width: 599px) {
	.changelog ol,
	.changelog ol li {
		width: auto; 
	}
	.changelog ol {
		padding: 0;
		transform: none !important;
	}
	.changelog ol li {
		display: block;
		height: auto;
		background: transparent;
	}
	.changelog ol li:first-child {
		margin-top: 25px;
	}
	.changelog ol li:not(:first-child) {
		margin-left: auto;
	}
	.changelog ol li div {
		width: 94%;
		height: auto !important;
		margin: 0 auto 25px;
	}
	.changelog ol li div {
		position: static;
	}
	.changelog ol li:nth-child(odd) div {
		transform: none;
	}
	.changelog ol li:nth-child(odd) div::before,
	.changelog ol li:nth-child(even) div::before {
		left: 50%;
		top: 100%;
		transform: translateX(-50%);
		border: none;
		border-left: 1px solid white;
		height: 25px;
	}
	.changelog ol li:last-child,
	.changelog ol li:nth-last-child(2) div::before,
	.changelog ol li:not(:last-child)::after,
	.changelog .arrows {
		display: none;
	}
}