#mainDiv{
    position: absolute;
    width: 100%;
    height: 90%;
    top: 10%;
    background-image: url(/static/image/background/about_us.jpg);
    background-repeat: no-repeat;
    background-size: 100% auto;
}

#contentDiv{
    position: inherit;
    width: 80%;
    height: 100%;
    left: 10%;
}

#contentDiv>ul{
    display: block;
    position: inherit;
    top: 8%;
    width: 100%;
    height: 8%;
    padding: 0;
    list-style: none;
}

#contentDiv>ul>li{
    display: inline-block;
    width: 33%;
    height: 100%;
    background-color: white;
    border-radius: 6px;
}

#contentDiv>ul>li:hover{
    background-color: skyblue;
}

.selLi{
    background-color: deepskyblue !important;
}

#contentDiv span{
    display:flex;
    height: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.text{
    position: inherit;
    top: 20%;
    width: 100%;
    height: 75%;
    /* background-color: white; */
    text-indent: 2em;
}

.text>p{
    font-size: 1.5em;
}

#text1{
    padding-top: 30px;
    box-sizing: border-box;
    transform: 90deg;
    overflow-y: scroll;
}

#text1>p{
    margin-left: 4%;
    margin-right: 5%;
}

/* 1号带背景图片 */
/* #text1{
    background-image: linear-gradient(to bottom, 
    rgba(255, 255, 255, 0.4), rgba(255,255,255,0.7)),
    url(/static/image/test/tec5.png);
    background-size: cover;
    overflow-y: scroll;
} */

/* 透视效果 */
.text{
    background-image: linear-gradient(to bottom,
    rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.7));
}

#text2>img{
    display: block;
    position: absolute;
    height: 30%;
    width: 25%;
    right: 10%;
}

#text2>p{
    font-size: 1.2em;
}

#vie1{
    top: 10%;
}

#vie2{
    bottom: 10%;
}