@media (max-width: 768px) {
    .navbar-collapse {
        position: fixed;
        top: 60px;
        left: 0;
        padding-left: 15px;
        padding-right: 15px;
        padding-bottom: 15px;
        height: 100%;
    }

    .navbar-collapse.collapsing {
        height: 100%;
        left: -75%;
        transition: height 0s ease;
    }

    .navbar-collapse.show {
        height: 100%;
        left: 0;
        transition: left 400ms ease-in-out;
    }

    .navbar-toggler.collapsed ~ .navbar-collapse {
        transition: left 400ms ease-in;
    }

    .nav-item {
        border-bottom: 1px solid #EEE;
    }
}