#backtop{
    display: none;
}
.container{
    width: 60%;
}
h2{
    color: #000;
    font-size: 20px;
    border-left: 5px solid #7ecde7;
    padding-left: 10px;
    font-weight: normal;
}
.content{
    box-shadow: 0 1px 6px 0 rgb(0 0 0 / 12%), 0 1px 6px 0 rgb(0 0 0 / 12%);
    margin-top: 20px;
    padding-top: 20px;
    padding-left: 20px;
    padding-right: 20px;
    overflow: hidden;
}
.describe{
    padding-top: 20px;
    padding-bottom: 20px;
}
.describe p{
    line-height: 30px;
    text-indent: 2em;
}
.describe .img{
    margin-top: 20px;
}
.describe img {
    height: 100%;
    width: 100%;
}
.mini{
    position: absolute;
    right: 0;
    top: 0;
    width: 20px;
    height: 20px;
    border-left: 1px solid lightgray;
    border-bottom: 1px solid lightgray;
    cursor: pointer;
}
.display{
    position: fixed;
    top: 70px;
    left: 10px;
    width: 20px;
    height: 20px;
    border: 1px solid lightgray;
    cursor: pointer;
    opacity: 0; 
    z-index: -1;
}
.mini img, .display img {
    width: 100%;
    height: 100%;
}