@media(max-width:991px){

    .brand-text{
        font-size:26px;
    }

    .navbar-collapse{
        padding-top:20px;
    }

    .navbar-nav{
        margin-bottom:20px;
        text-align:center;
    }

    .navbar-nav .nav-item{
        margin:5px 0;
    }

}