.history {
    width: 100%;
    height: auto;
    overflow: hidden;
    padding-top: 50px;
    background: #fff;
}

.history li {
    width: 641px;
    height: auto;
    position: relative;
}

.history li h3 {
    font-size: 20px;
    color: #3479D7;
}

.history li p {
    font-size: 15px;
    color: #333;
    line-height: 24px;
}

.history li .his_icon {
    position: absolute;
    width: 42px;
    height: 61px;
    top: 0;
}

.history li.his_left {
    text-align: right;
    float: left;
    border-right: 1px solid #8bafd6;
    padding-right: 40px;
    padding-left: 9px;
}

.history li.his_left .his_icon {
    background: url(../images/his_2.png) no-repeat #fff;
    right: -31.5px;
}

.history li.his_right {
    text-align: left;
    float: right;
    border-left: 1px solid #8bafd6;
    padding-left: 40px;
    padding-right: 10px;
}

.history li.his_right .his_icon {
    background: url(../images/his_1.png) no-repeat #fff;
    left: -30.5px;
}

@media screen and (max-width: 1440px) {
    .history li {
        width: 541px;
    }
}

@media screen and (max-width: 1024px) {

    .history {
        padding-top: 10px;
    }

    .history li {
        width: 355px;
    }

    .history li.his_left {
        padding-right: 20px;
    }

    .history li.his_right {
        padding-left: 20px;
    }

    .history li h3 {
        font-size: 16px;
    }

    .history li p {
        font-size: 12px;
    }

}

@media screen and (max-width:768px){
    .history li {
        width: 355px;
    }
}

@media screen and (max-width:414px){
    .history li {
        width: 183px;
    }
}

@media screen and (max-width:376px){
    .history li {
        width: 163px;
    }
}