body {
    padding-top: 90px;
}

@media (min-width: 768px) {
    body {
        padding-top: 0;
    }
}

@media (min-width: 768px) {
    body {
        margin-left: 252px;
    }
}
.navbar {
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: none;
}
.navbar.fixed-left {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
}
.navbar-nav .nav-link {
    padding-top: 0.3rem;
    padding-bottom: 0.3rem;
}

@media (min-width: 768px) {
    .navbar.fixed-left {
        bottom: 0;
        width: 252px;
        flex-flow: column nowrap;
        align-items: flex-start;
    }

        .navbar.fixed-left .navbar-collapse {
            flex-grow: 0;
            flex-direction: column;
            width: 100%;
        }

            .navbar.fixed-left .navbar-collapse .navbar-nav {
                flex-direction: column;
                width: 100%;
            }

                .navbar.fixed-left .navbar-collapse .navbar-nav .nav-item {
                    width: 100%;
                }

                    .navbar.fixed-left .navbar-collapse .navbar-nav .nav-item .dropdown-menu {
                        top: 0;
                    }
}

@media (min-width: 768px) {
    .navbar.fixed-left {
        right: auto;
    }

        .navbar.fixed-left .navbar-nav .nav-item .dropdown-toggle:after {
            border-top: 0.3em solid transparent;
            border-left: 0.3em solid;
            border-bottom: 0.3em solid transparent;
            border-right: none;
            vertical-align: baseline;
        }

        .navbar.fixed-left .navbar-nav .nav-item .dropdown-menu {
            left: 100%;
        }
}