.det_div{
    margin-left: 15%;
    margin-right: 15%;

}
@media screen and (max-width: 640px) {
    /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    .det_div {
        width: 100%;
        margin-left: 0%;
        margin-right: 0%;
        overflow: hidden
    }
}

#det_front{
    font-size:1rem;
    text-align: center;
}
@media screen and (max-width: 640px) {
    h3, .h3 {
        font-size: 1rem;
    }
}

@media screen and (max-width: 640px) {
    /*当屏幕尺寸小于600px时，应用下面的CSS样式*/
    #det_front {
        font-size:0.7rem;
        text-align: center;
    }
}
.det_a{
    float: right;
}
.det_p{
    text-align: center;
}
@media screen and (max-width: 640px) {
    .det_p_font {
        font-size: 0.7rem;
    }
}
.nav .information .chunk .content{
    width: 100%;
    height: auto;
    word-break: break-all;
    word-wrap: break-word;
    overflow: hidden;
}