.background{
    width: 100%;
}
.index{
    position: relative;
}
.content{
    position: absolute;
    top: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 10;
}
.title{
    width: 870px;
    height: 70px;
    margin-top: 100px;
}
.title img{
    width: 870px;
    height: 70px;
}
.session{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 600px;
    margin-top: 100px;
    margin-left: 50px;
}
.sitem{
    width: 100%;
    display: flex;
    /* justify-content: center; */
}
.item{
    width: 100px;
    height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 12px;
    /* font-weight: bold; */
    transition: .3s;
    color: #ffffff;
    border-radius: 12px;
    margin: 20px;
    cursor: pointer;
}
.item:hover{
    box-shadow: 0 2px 16px 0 rgba(163, 163, 163, 0.563);
}
.ios{
    width: 90px !important;
    height: 90px;
}
.item-p1{
    width: 80px;
    text-align: center;
}
.item-img{
    width: 40px;
    height: 45px;
    display: flex;
    align-items: center;
    margin-top: 15px;
    margin-bottom: 5px;
}
.item-img img{
    width: 40px;
}
.item1{
    background-color: #4493FF;
}
.item2{
    background-color: #DE8332;
}
.item3{
    background-color: #4B844F;
}
.item4{
    background-color: #E85B63;
}
.item5{
    background-color: #BA67CC;
}
.item6{
    background-color: #7584CF;
}
.item7{
    background-color: #67CBCC;
}
.item8{
    background-color: #F36A34;
}
.item9{
    background-color: #679dff;

}
.item10{
    background-color: #3638be;

}
.code{
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000000;
    position: relative;
}
.code img{
    width:100px;
    width:100px;
}
.codetext{
    width: 90px;
    position: absolute;
    bottom: -30px;
    text-align: center;
}
a{
    text-decoration: none;
}