.adapt {
    width: 1000px;
    margin: 0 auto;
}
#mk_banner {
    height: auto;
}
#mk_banner img{
    width: 100%;
    height: auto;
}
#mk_content iframe{
    width: 100%;
}
#mk_button {
    width: 100%;
    height: 60px;
    margin-bottom: 10px; 
    display: flex;
    display: -webkit-flex;
    justify-content: center;
    align-items: center;
    background-color: #fff;
}
#mk_button li{
    width: 30%;
    text-align: center;
}
#mk_button li img{
    width: 30px;
    height: 30px;
}
#mk_content {
    margin-bottom: 50px;
}
#mk_button li a:hover {
    color: #e03f30;
}


#mk_nav{
    box-sizing: border-box;
    padding:0 20px;
    position: fixed;
    width: 1000px;
    margin: 0 auto;
    height: 50px;
    background-color: #f7f7f7;
    bottom: 0;
    box-shadow: 0px -4px 10px rgba(0,0,0,0.2);
    display: flex;
    display: -webkit-flex;
    align-items: center;
    justify-content:space-between;
    color: #989898;
}
#mk_nav .msg {
    display: inline-block;
}
#mk_nav .info {
    color: #b5b5b5;
}
.btn-b {
    display: inline-block;
    width: 150px;
    height: 30px;
    line-height: 30px;
    border-radius: 100px;
    background-color: #e03f30;
    color: #fff;
    text-align: center;
}
@media (max-width: 1200px) {
    .adapt,#mk_nav {
        width: 960px;
    }
}
@media (max-width: 977px) {
    .adapt,#mk_nav {
        width: 100%
    }
    .bottom-nav {
        display: none!important;
    }
}
@media (min-width: 977px){
    #mk_banner{
        height: auto;
    }
    #mk_banner img {
        height: auto;
    }  
    #mk_nav {
        position: relative;
        box-shadow: 0px 0px 10px rgba(0,0,0,0.2);
        margin-bottom: 10px;
    }
    #mk_button {
        height: 120px;
    }
    #mk_button li img{
        width: 60px;
        height: 60px;
    }
}