简洁纯CSS3横向水平时间轴特效代码

简洁纯CSS3横向水平时间轴特效代码5228
这是一款基于Bootstrap网格系统的响应式横向水平时间轴特效。该水平时间轴特效采用bootstrap网格进行布局,然后通过css代码来进行美化,效果简洁时尚。

核心CSS3代码
.main-timeline{ position: relative; }
.main-timeline:before,
.main-timeline:after{
    content: "";
    display: block;
    width: 100%;
    clear: both;
}
.main-timeline:before{
    content: "";
    width: 100%;
    height: 5px;
    background: #fff;
    margin: auto 0;
    position: absolute;
    top: 50%;
    left: 0;
}
.main-timeline .timeline{
    width: 22%;
    float: left;
    margin-left: 3%;
    position: relative;
}
.main-timeline .timeline:before{
    content: attr(data-heading);
    display: inline-block;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    transform: rotate(-90deg);
    position: absolute;
    top: 30px;
    left: -2px;
    z-index: 2;
}
.main-timeline .timeline:after{
    content: "";
    width: 5px;
    height: 60px;
    border-left: 9px dotted #fff;
    position: absolute;
    top: 54%;
    left: 71px;
}
.main-timeline .timeline-content{
    padding: 15px 0 40px 50px;
    margin-bottom: 80px;
    border-radius: 15px;
    border: 5px solid #fff;
    text-align: left;
    background: #f67420;
    z-index: 1;
    position: relative;
}
.main-timeline .timeline:nth-child(even) .timeline-content{ background: #43a6ba; }
.main-timeline .timeline-content:before{
    content: "";
    width: 40px;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: #d66215;
    border-radius: 10px 0 0 10px;
}
.main-timeline .timeline:nth-child(even) .timeline-content:before{ background: #1784ab; }
.main-timeline .timeline-content:after{
    content: "";
    width: 40px;
    height: 40px;
    background: #f67420;
    border-bottom: 5px solid #fff;
    border-right: 5px solid #fff;
    position: absolute;
    bottom: -23px;
    left: 50px;
    transform: rotate(45deg);
    z-index: -1;
}
.main-timeline .timeline:nth-child(even) .timeline-content:after{ background: #43a6ba; }
.main-timeline .description{
    font-size: 14px;
    color: #fff;
}
.main-timeline .read-more{
    display: inline-block;
    padding-right: 15px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    text-transform: capitalize;
    position: relative;
}
.main-timeline .read-more:before{
    content: "\f0da";
    font-family: 'FontAwesome';
    font-size: 24px;
    position: absolute;
    top: -6px;
    right: 0;
}
.main-timeline .year{
    display: inline-block;
    width: 85px;
    height: 85px;
    line-height: 85px;
    background: #f67420;
    border-radius: 5px;
    border: 5px solid #fff;
    text-align: center;
    margin-left: 34px;
    transform: rotate(45deg);
    position: relative;
}
.main-timeline .timeline:nth-child(even) .year{ background: #43a6ba; }
.main-timeline .year span{
    display: block;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    transform: rotate(-45deg);
}
.main-timeline .timeline.bottom{ margin: -7.7% 0 0 7%; }
.main-timeline .timeline.bottom:nth-child(5n+1),
.main-timeline .timeline.bottom:last-child{ margin-left: 3%; }
.main-timeline .timeline.bottom:before{
    top: auto;
    bottom: 110px;
}
.main-timeline .timeline.bottom:after{
    top: auto;
    left: auto;
    bottom: 54%;
    right: 71px;
    border-color: #fff;
}
.main-timeline .timeline.bottom .timeline-content{
    margin: 80px 0 0 0;
    padding: 15px 0 40px 50px;
}
.main-timeline .timeline.bottom .timeline-content:after{
    border: none;
    border-top: 5px solid #fff;
    border-left: 5px solid #fff;
    bottom: auto;
    top: -23px;
    left: auto;
    right: 50px;
}
.main-timeline .timeline.bottom .year{
    top: 4px;
    margin-left: 132px;
}
@media only screen and (max-width: 1199px){
    .main-timeline:before{
        width: 5px;
        height: 100%;
        top: 0;
        left: 5%;
    }
    .main-timeline .timeline,
    .main-timeline .timeline.bottom,
    .main-timeline .timeline.bottom:nth-child(5n+1),
    .main-timeline .timeline.bottom:last-child{
        width: 85%;
        float: none;
        margin: 0 0 20px 15%;
    }
    .main-timeline .timeline:after,
    .main-timeline .timeline.bottom:after{
        width: 60px;
        height: 5px;
        top: 50px;
        left: -58px;
        border-top: 9px dotted #fff;
    }
    .main-timeline .timeline-content,
    .main-timeline .timeline.bottom .timeline-content{ margin: 0; }
    .main-timeline .year,
    .main-timeline .timeline.bottom .year{
        width: 65px;
        height: 65px;
        line-height: 60px;
        margin: 0;
        position: absolute;
        top: 20px;
        left: -15.5%;
        z-index: 1;
    }
    .main-timeline .timeline .timeline-content:after{ display: none; }
    .main-timeline .timeline.bottom:before{
        bottom: auto;
        top: 30px;
        left: -2px;
    }
}
@media only screen and (max-width: 990px){
    .main-timeline .year,
    .main-timeline .timeline.bottom .year{
        left: -16.8%;
    }
}
@media only screen and (max-width: 767px){
    .main-timeline .timeline:after,
    .main-timeline .timeline.bottom:after{ display: none; }
    .main-timeline .year,
    .main-timeline .timeline.bottom .year{
        width: 30px;
        height: 30px;
        border: 3px solid #fff;
        left: -13.5%;
    }
    .main-timeline .year span{ display: none; }
}
@media only screen and (max-width: 480px){
    .main-timeline .year,
    .main-timeline .timeline.bottom .year{ left: -15.5%; }
}

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