body{
    background-color: #fff;
    overflow-x: hidden;
    position: relative;
}

section{
    overflow-x: hidden;
}

#nav_section{
    position: fixed;
    z-index: 9999;
    width: 100%;

}

#ataglance_section{
    margin-top: 25px;
}

@media (min-width: 992px){
    #nav_section{
        position: fixed;
        box-shadow: 0px 2px 3px lightgrey;
    }
}