body,
html {
    font-size: 100%;
    padding: 0;
    margin: 0;
}


/* Reset */

*,
*:after,
*:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}


/* Clearfix hack by Nicolas Gallagher: http://nicolasgallagher.com/micro-clearfix-hack/ */

.clearfix:before,
.clearfix:after {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}

body {
    background: #494A5F;
    color: #D5D6E2;
    font-weight: 500;
    font-size: 1.05em;
    font-family: "Microsoft YaHei", "Segoe UI", "Lucida Grande", Helvetica, Arial, sans-serif;
}

a {
    color: rgba(255, 255, 255, 0.6);
    outline: none;
    text-decoration: none;
    -webkit-transition: 0.2s;
    transition: 0.2s;
}

a:hover,
a:focus {
    color: #74777b;
    text-decoration: none;
}

.demo {
    background: #25303b;
    padding: 2em 0;
}

.main-timeline {
    width: 80%;
    margin: 20px auto;
    position: relative;
}

.main-timeline:before {
    content: "";
    display: block;
    width: 2px;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 0 0 -1px;
    position: absolute;
    top: 0;
    left: 50%;
}

.main-timeline .timeline {
    width: 100%;
    margin-bottom: 20px;
    position: relative;
}

.main-timeline .timeline:after {
    content: "";
    display: block;
    clear: both;
}

.main-timeline .timeline-content {
    width: 40%;
    float: left;
    margin: 5px 0 0 0;
    border-radius: 6px;
}

.main-timeline .date {
    display: block;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: #25303b;
    padding: 5px 0;
    margin: 0 0 0 -36px;
    position: absolute;
    top: 0;
    left: 50%;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 7px #25303b;
}

.main-timeline .date span {
    display: block;
    text-align: center;
}

.main-timeline .day,
.main-timeline .year {
    font-size: 10px;
}

.main-timeline .month {
    font-size: 18px;
}

.main-timeline .title {
    padding: 15px;
    margin: 0;
    font-size: 20px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: -1px;
    border-radius: 6px 6px 0 0;
    position: relative;
}

.main-timeline .title:after {
    content: "";
    width: 10px;
    height: 10px;
    position: absolute;
    top: 20px;
    right: -5px;
    transform: rotate(-45deg);
}

.main-timeline .description {
    padding: 15px;
    margin: 0;
    font-size: 14px;
    color: #656565;
    background: #fff;
    border-radius: 0 0 6px 6px;
}

.main-timeline .timeline:nth-child(2n+2) .timeline-content {
    float: right;
}

.main-timeline .timeline:nth-child(2n+2) .title:after {
    left: -5px;
}

.main-timeline .timeline:nth-child(5n-4) .title,
.main-timeline .timeline:nth-child(5n-4) .title:after {
    background: #9f84c4;
}

.main-timeline .timeline:nth-child(5n-3) .title,
.main-timeline .timeline:nth-child(5n-3) .title:after {
    background: #02a2dd;
}

.main-timeline .timeline:nth-child(5n-2) .title,
.main-timeline .timeline:nth-child(5n-2) .title:after {
    background: #58b25e;
}

.main-timeline .timeline:nth-child(5n-1) .title,
.main-timeline .timeline:nth-child(5n-1) .title:after {
    background: #eab715;
}

.main-timeline .timeline:nth-child(5n) .title,
.main-timeline .timeline:nth-child(5n) .title:after {
    background: #ff6670;
}

@media only screen and (max-width: 990px) {
    .main-timeline {
        width: 100%;
    }
}

@media only screen and (max-width: 767px) {
    .main-timeline:before,
    .main-timeline .date {
        left: 6%;
    }
    .main-timeline .timeline-content {
        width: 85%;
        float: right;
    }
    .main-timeline .title:after {
        left: -5px;
    }
}

@media only screen and (max-width: 480px) {
    .main-timeline:before,
    .main-timeline .date {
        left: 12%;
    }
    .main-timeline .timeline-content {
        width: 75%;
    }
    .main-timeline .date {
        width: 60px;
        height: 60px;
        margin-left: -30px;
    }
    .main-timeline .month {
        font-size: 14px;
    }
}

.days {
    color: #ff6670;
    font-weight: bold;
}