.container .container_body > article > section:nth-child(3){
    width: 100%;
    background: red;
    height: 350px
}
.groupIntro{
    margin: 30px auto 50px;
    width: 1000px;
}
.leftIntro{
    float:left;
    width: 478px;
    /*height:320px;*/
    margin-right: 40px;
}
.leftIntro img,.rightIntro img{
    width: 100%;
}
.rightIntro{
    float: right;
    width: 482px;
}
.rightIntro p{
    font-size: 12px;
    font-size: 1.2rem;
}
.groupPhoneTitle{
    display: none;
    color: #0060aa;
    font-size: 2.2rem;
    font-weight: bold;
}
.introPart{
    margin-top: 40px;
}
/*pad单独样式 <1000px分辨率*/
@media screen and (max-width: 999px) {
    h1{
        color:red;
    }
}
/*pad单独样式 <960px */
@media screen and (min-width: 768px) and (max-width: 959px) {
}
/*手机单独样式 <768px */
@media screen and (min-width: 320px) and (max-width: 768px) {
    .groupPhoneTitle{
        display: block;
    }
    .leftIntro,.rightIntro{
        float: none;
        width: 100%;
    }
    .groupIntro{
        width: 94%;
        margin:20px auto;
    }
    .introPart{
        margin-top: 20px;
    }
}