.box {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    height: 100%;
}

.content {
    padding: 0px;
    position: relative;
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    flex: 1;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    background-color: rgb(255, 255, 255);
    display: flex;
    flex-direction: column;
    align-items: center;
   /*  box-shadow: rgba(0, 0, 0, 0.219) 0px 0px 10px; */
    overflow-x: hidden;
}

/* .nav {
    width: 100%;
    height: 50px; 
    background:url("../img/bj.png"); 
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    transition: height 0.3s ease;
    box-shadow: rgba(0, 0, 0, 0.219) 0px 0px 10px;
    z-index: 9999;
} */
.nav {
    width: 100%;
    height: 70px; 
    background:url("../img/bj.png");/* #2f80b7  #1061a3*/
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    transition: height 0.3s ease;
    box-shadow: rgba(0, 0, 0, 0.219) 0px 0px 10px;
    z-index: 9999;
}

.fl-nav {
    right: 2vw!important;
}