分享一个纵向自适应时间轴HTML+CSS源码

网络上各式各样，懒得找，随便看了几个都不太合自己胃口！down了个并作了修改，现在分享出来！

效果图

效果演示：点击前往查看 timeline1

timeline1

源码

下载地址

链接：点击下载

HTML部分

<div id="timelime">
<section id="cd-timeline" class="cd-container">
		<div class="cd-timeline-block"> <!-- 卡片开始 -->
		<div class="cd-timeline-color cd-blue"></div>
		<div class="cd-timeline-content cd-blue">
			<h3>添加博客历程时间轴！</h3>
			<p>看见很多博客都有博客历程什么的，自己也整了个并把记得的事件补进时间轴。</p>
			<span class="cd-date">2019-10-01</span>
		</div>
		</div> <!-- 卡片结束 -->
</section>
</div>
<!-- 更换卡片背景颜色：[蓝色cd-blue] [黄色cd-yellow] [粉色cd-pink] [红色cd-red] [绿色cd-green] [紫色cd-purple] [灰色cd-gray] -->

CSS部分

<style>
#timeline * {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
*, *:after, *:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
.cd-container {
  width: 100%;
  margin: 0 auto;
}
.cd-container::after {
  content: '';
  display: table;
  clear: both;
}
#cd-timeline {
  position: relative;
  padding: 2em 0;
  margin-top: 2em;
  margin-bottom: 2em;
}
#cd-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 18px;
  height: 100%;
  width: 4px;
  background: #d7e4ed;
}
@media only screen and (min-width: 600px) {
  #cd-timeline {
    margin-top: 3em;
    margin-bottom: 3em;
  }
  #cd-timeline::before {
    left: 50%;
    margin-left: -2px;
  }
}
.cd-timeline-block {
  position: relative;
  margin: 2em 0;
}
.cd-timeline-block:after {
  content: "";
  display: table;
  clear: both;
}
.cd-timeline-block:first-child {
  margin-top: 0;
}
.cd-timeline-block:last-child {
  margin-bottom: 0;
}
@media only screen and (min-width: 600px) {
  .cd-timeline-block {
    margin: 4em 0;
  }
  .cd-timeline-block:first-child {
    margin-top: 0;
  }
  .cd-timeline-block:last-child {
    margin-bottom: 0;
  }
}
.cd-timeline-color {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  margin-left: 10px;
  margin-top: 10px;
  border-radius: 50%;
  box-shadow: 0 0 0 4px white, inset 0 2px 0 rgba(0, 0, 0, 0.08), 0 3px 0 4px rgba(0, 0, 0, 0.05);
}
.cd-timeline-color.cd-green {
  background: #75ce66;
}
.cd-timeline-color.cd-red {
  background: #c03b44;
}
.cd-timeline-color.cd-yellow {
  background: #f0ca45;
}
.cd-timeline-color.cd-pink {
  background: #F282C7;
}
.cd-timeline-color.cd-blue {
  background: #2196F3;
}
.cd-timeline-color.cd-purple {
  background: #9C27B0;
}
.cd-timeline-color.cd-gray {
  background: #7E8DA3;
}
@media only screen and (min-width: 600px) {
  .cd-timeline-color {
    width: 20px;
    height: 20px;
    left: 50%;
    margin-left: -10px;
    margin-top: 18px;
    -webkit-transform: translateZ(0);
    -webkit-backface-visibility: hidden;
  }
  .cssanimations .cd-timeline-color.is-hidden {
    visibility: hidden;
  }
  .cssanimations .cd-timeline-color.bounce-in {
    visibility: visible;
    -webkit-animation: cd-bounce-1 0.6s;
    -moz-animation: cd-bounce-1 0.6s;
    animation: cd-bounce-1 0.6s;
  }
}
.cd-timeline-content {
  position: relative;
  margin-left: 60px;
  background: black;
  border-radius: 0.25em;
  padding: 1em;
  box-shadow: 0 3px 0 #d7e4ed;
}
.cd-timeline-content.cd-green {
  background: #75ce66;
}
.cd-timeline-content.cd-red {
  background: #c03b44;
}
.cd-timeline-content.cd-yellow {
  background: #f0ca45;
}
.cd-timeline-content.cd-pink {
  background: #F282C7;
}
.cd-timeline-content.cd-blue {
  background: #2196F3;
}
.cd-timeline-content.cd-purple {
  background: #9C27B0;
}
.cd-timeline-content.cd-gray {
  background: #7E8DA3;
}
.cd-timeline-content:after {
  content: "";
  display: table;
  clear: both;
}
.cd-timeline-content h3 {
  color: #FFFFFF;
}
.cd-timeline-content p, .cd-timeline-content .cd-date {
  font-size: 13px;
  font-size: 0.8125rem;
}
.cd-timeline-content .cd-date {
  display: inline-block;
}
.cd-timeline-content p {
	color: #FFFFFF;
  margin: 1em 0;
  line-height: 1.6;
}
.cd-timeline-content .cd-date {
  float: left;
  padding: .8em 0;
  opacity: .7;
  color: #ffffff;
}
.cd-timeline-content::before {
  content: '';
  position: absolute;
  top: 16px;
  right: 100%;
  height: 0;
  width: 0;
  border: 7px solid transparent;
  border-right: 7px solid black;
}
.cd-timeline-content.cd-green::before {
  border-right: 7px solid #75ce66;
}
.cd-timeline-content.cd-red::before {
  border-right: 7px solid #c03b44;
}
.cd-timeline-content.cd-yellow::before {
  border-right: 7px solid #f0ca45;
}
.cd-timeline-content.cd-pink::before {
  border-right: 7px solid #F282C7;
}
.cd-timeline-content.cd-blue::before {
  border-right: 7px solid #2196F3;
}
.cd-timeline-content.cd-purple::before {
  border-right: 7px solid #9C27B0;
}
.cd-timeline-content.cd-gray::before {
  border-right: 7px solid #7E8DA3;
}
@media only screen and (min-width: 768px) {
  .cd-timeline-content h3 {
    font-size: 20px;
    font-size: 1.25rem;
  }
  .cd-timeline-content p {
    font-size: 16px;
    font-size: 1rem;
  }
  .cd-timeline-content .cd-date {
    font-size: 14px;
    font-size: 0.875rem;
    color: rgba(0,0,0,0.6);
  }
}
@media only screen and (min-width: 600px) {
  .cd-timeline-content {
    margin-left: 0;
    padding: 1.6em;
    width: 45%;
  }
  .cd-timeline-content::before {
    top: 24px;
    left: 100%;
    border-color: transparent;
    border-left-color: black;
  }
.cd-timeline-content.cd-green::before {
	border-color: transparent;
  border-left-color: #75ce66;
}
.cd-timeline-content.cd-red::before {
	border-color: transparent;
  border-left-color: #c03b44;
}
.cd-timeline-content.cd-yellow::before {
	border-color: transparent;
  border-left-color: #f0ca45;
}
.cd-timeline-content.cd-pink::before {
	border-color: transparent;
  border-left-color: #F282C7;
}
.cd-timeline-content.cd-blue::before {
	border-color: transparent;
  border-left-color: #2196F3;
}
.cd-timeline-content.cd-purple::before {
  border-color: transparent;
  border-left-color: #9C27B0;
}
.cd-timeline-content.cd-gray::before {
  border-color: transparent;
  border-left-color: #7E8DA3;
}
  .cd-timeline-content .cd-date {
    position: absolute;
    width: 100%;
    left: 122%;
    top: 6px;
    font-size: 16px;
    font-size: 1rem;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content {
    float: right;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content::before {
    top: 24px;
    left: auto;
    right: 100%;
    border-color: transparent;
    border-right-color: black;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-green::before {
	border-color: transparent;
  border-right-color: #75ce66;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-red::before {
	border-color: transparent;
  border-right-color: #c03b44;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-yellow::before {
	border-color: transparent;
  border-right-color: #f0ca45;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-pink::before {
	border-color: transparent;
  border-right-color: #F282C7;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-blue::before {
	border-color: transparent;
  border-right-color: #2196F3;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-purple::before {
  border-color: transparent;
  border-right-color: #9C27B0;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content.cd-gray::before {
  border-color: transparent;
  border-right-color: #7E8DA3;
}
  .cd-timeline-block:nth-child(even) .cd-timeline-content .cd-date {
    left: auto;
    right: 122%;
    text-align: right;
  }
  .cssanimations .cd-timeline-content.is-hidden {
    visibility: hidden;
  }
  .cssanimations .cd-timeline-content.bounce-in {
    visibility: visible;
    -webkit-animation: cd-bounce-2 0.6s;
    -moz-animation: cd-bounce-2 0.6s;
    animation: cd-bounce-2 0.6s;
  }
}
@media only screen and (min-width: 600px) {
  .cssanimations .cd-timeline-block:nth-child(even) .cd-timeline-content.bounce-in {
    -webkit-animation: cd-bounce-2-inverse 0.6s;
    -moz-animation: cd-bounce-2-inverse 0.6s;
    animation: cd-bounce-2-inverse 0.6s;
  }
}
</style>