/*Extra Small*/
@media only screen and (min-width : 320px) and (max-width : 479px){
    .header{
        margin: 0px !important;
    }
    .navbar-collapse{
        float: none !important;
        text-align: center !important;

    }
}


@media only screen and (min-width : 480px) and (max-width : 767px){
    .header{
        margin: 0px !important;
    }
    .navbar-collapse{
        float: none !important;
        text-align: center !important;

    }
}


/* Small Devices, Tablets */
@media only screen and (min-width : 768px) and (max-width : 991px) {
    .header{
        margin: 0px !important;
    }
    .navbar-collapse{
        float: none !important;
        text-align: center !important;

    }
}