.main-bottom{
    background-color: #f5f5f5;
    margin-top: 100px;
}
.main-bottom-child{
    width: 1100px;
    margin: 0 auto;
}
.bottom-slogan>li , .bottom-message>li{
    width: 20%;
}
.main-bottom-child>ul{
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 120px;
}
.bottom-slogan li{
    display: flex;
    align-items: center;
}
.bottom-slogan li img{
    width: 25px;
    height:25px;
    margin-right: 10px;
}
.bottom-slogan li span{
    font-size: 20px;
    font-weight: bold;
}
.bottom-slogan{
    border-bottom: 2px solid #666;
}
.message-logo{
    font-size: 20px;
    font-weight: bold;
}
.message-chat>ul>li:first-child{
    font-size: 18px;
    margin-bottom: 10px;
}
.message-qr_code{
    width: 80px;
    height: 80px;
}