Change the breakpoint of Bootstrap navbar (to 900px)

/* CHANGING BREAKPOINT OF BOOTSTRAP 3 NAVIGATION BAR*/
@media (max-width: 900px) {
        .navbar-header {
                float: none;
        }
        .navbar-toggle {
                display: block;
        }
        .navbar-collapse {
                border-top: 1px solid transparent;
                box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
        }
        .navbar-collapse.collapse {
                display: none!important;
        }
        .navbar-collapse.collapse.in {
            display: block!important;
        }
        .navbar-nav {
                float: none!important;
                margin: 7.5px -15px;
        }
        .navbar-nav>li {
                float: none;
        }
        .navbar-nav>li>a {
                padding-top: 10px;
                padding-bottom: 10px;
        }
    .navbar-form {
        padding: 10px 15px;
        margin-top: 8px;
        margin-right: -15px;
        margin-bottom: 8px;
        margin-left: -15px;
        border-top: 1px solid transparent;
        border-bottom: 1px solid transparent;
        -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 0 rgba(255, 255, 255, .1);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 0 rgba(255, 255, 255, .1);
        width:auto;
        float:none!important;
    }
}