.timeLine {
    margin: 20px auto 0;
    overflow: hidden;
    position: relative;
}
.timeLine li {
    background: url(../img/back1.png) repeat-y 7.5px 0;
    padding-bottom: 30px;
    zoom: 1;
    display: flex;
}
.timeLine li:after {
    content:" ";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
.timeLine li:last-child {
    background:none !important;
}
.timeLine li .con {
    background:url(../img/icon1.jpg) no-repeat 0 0;
    width: 100%;
    display:inline-block;
    padding-left: 30px;
}
.timeLine li .con img{
    max-width: 100%;
}

/* .on  */
.timeLine li.on{
    background: url(../img/back2.png) repeat-y 7.5px 0;
}
.timeLine li.on .con {
    background:url(../img/icon2.jpg) no-repeat 0 0;color: #1db702;
}

/* .on 下面的li  */
.timeLine li.on ~ li{
    background: url(../img/back3.png) repeat-y 7.5px 0;
}
.timeLine li.on ~ li .con {
    background:url(../img/icon3.jpg) no-repeat 0 0;color: #c3c3c3;
}