bootstrap navbar header collapse for Tablet >768 < 991 and bootstrap 3 tricks

navbarTabletMenuCollapse.css

    .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-nav {
        float: none!important;
        margin: 7.5px -15px;
    }
    .navbar-nav>li {
        float: none;
    }
    .navbar-nav>li>a {
        padding-top: 10px;
        padding-bottom: 10px;
    }
    
    .navbar-collapse.collapse.in { 
        display: block!important;
    }
    .collapsing {
        overflow: hidden!important;
    }

tricks.md

https://scotch.io/bar-talk/bootstrap-3-tips-and-tricks-you-might-not-know