.img-response{
    display: block;
    margin: 0 auto;
    max-width: 100%;
}
.demonstrate-box{
    display: flex;
    height: 100%;
    padding:0 0 60px 0;
    box-sizing: border-box;
    flex-direction: column;
}
.top{
    padding:0 30px;
    padding-top: 20px;
}
.top .subtitle{
    color:#111111;
    font-size:16px;
    font-weight: bold;
}
.top .center{
    text-align: center;
}
.top .subhead{
    margin-top: 5px;
    font-size:12px;
    font-family:PingFangSC-Ultralight,PingFang SC;
    color:#797979;
    line-height:17px;
}
.top .time-box{
    display: flex;
    height: 20px;
    align-items: center;
    margin-top: 8px;
}
.top .time-box .text{
    display: flex;
    height: 20px;
    align-items: center;
    color:#8D8D8D;
    font-size:12px;
}
.top .time-box img{
    width: 13px;
    height: 13px;
    margin-right: 6px;
}
.top .adr-box{
    display: flex;
    height: 20px;
    align-items: center;
    margin-top: 5px;
}
.top .adr-box .text{
    display: flex;
    height: 20px;
    align-items: center;
    color:#8D8D8D;
    font-size:12px;
}
.top .adr-box img{
    width: 13px;
    height: 13px;
    margin-right: 6px;
}
.main{
    margin-top: 14px;
}
.main .item-title{
    position: relative;
    font-size:14px;
    color:#111111;
}
.main .item-title .left-line{
    position: absolute;
    left: 0;
    top: 0;
    width:2px;
    height:20px;
    background:rgba(22,22,22,1);
}
.main .paragraph{
    line-height:24px;
    padding:0 30px;
    font-size:12px;
    color:#111111;
    padding-bottom: 10px;
}
.main .pic-box{
    padding:0 30px;
    padding-bottom: 18px;
}
.main .pic-box .pic{
    width: 100%;
    margin-top: 16px;
}