trf_certest/resources/sass/components/sidebar.scss

$sidebar-bg-color: #30353e;

.sidebar {
    top: 70px;
    width: 250px;
    min-width: 250px;
    z-index: 10;
    background: $sidebar-bg-color;
    bottom: 0;
    margin-top: 0;
    padding-bottom: 30px;
    position: fixed;
    box-shadow: 0 0 24px 0 rgba(0, 0, 0, 0.06), 0 1px 0 0 rgba(0, 0, 0, 0.02);
    overflow-y: scroll;
    height: 100%;

    transition: all 0.3s;

    .user-box {
        ul li a {
            color: $gray-500;

            &:hover {
                color: $primary;
            }

            i {
                font-size: 14px;
            }
        }

        h5 a {
            color: $gray-500;
            font-size: 15px;
            text-decoration: none;

            &:hover {
                color: $primary;
            }
        }
    }

    .nav-link {
        font-weight: 400;
        color: $gray-500;
    }

    .nav-link.active,
    .nav-link:hover {
        color: $gray-300;
    }

    .nav-link.active {
        background-color: lighten($sidebar-bg-color, 5%);
    }

    .sub-menu li {
        padding-left: 40px;
    }

    .sidebar-heading {
        font-size: .75rem;
        text-transform: uppercase;
    }

    ul li a i {
        display: inline-block;
        font-size: 16px;
        line-height: 17px;
        margin-right: 13px;
        text-align: center;
        vertical-align: middle;
        width: 20px;
    }

    .dropdown-menu {
        position: relative;
        width: 100%;
        padding: 0;
        margin: 0;
        border-radius: 0;
        border: none;
        box-shadow: none;
    }

    /* closed state */
    .nav-item .nav-link[aria-expanded="false"]::after {
        content: "\f0d7";
        font-family: "Font Awesome 5 Free";
        display: inline;
        text-align: right;
        padding-left: 5px;
        font-weight: 900;
    }

    /* open state */
    .nav-item .nav-link[aria-expanded="true"] {
        color: $gray-300;
    }

    .nav-item .nav-link[aria-expanded="true"]::after {
        content: "\f0d8";
        font-family: "Font Awesome 5 Free";
        display: inline;
        text-align: right;
        padding-left: 5px;
        font-weight: 900;
    }
}

.sidebar-collapsed .sidebar {
    width: 80px;
    min-width: 80px;

    .sub-menu li {
        padding-left: 0;
    }

    .user-box {
        display: none;
    }

    .nav-link span {
        display: none;
    }

    .sidebar-sticky {
        padding-top: 1rem;
        overflow: inherit !important;
    }

    .nav > li.nav-item {
        width: 50px;
        margin-top: 10px;
    }

    ul li a i {
        font-size: 20px;
    }

    li {
        position: relative;
        white-space: nowrap;

        ul {
            display: none;
        }

        &:hover {
            background-color: $sidebar-bg-color;

            .nav-link span {
                display: inline-block;
            }

            & > a {
                position: relative;
                width: 260px;
                background-color: $sidebar-bg-color;
                -webkit-transition: none;
                transition: none;
                border-top-right-radius: $border-radius;

                span {
                    padding-left: 30px;
                    display: inline;
                }
            }

            ul {
                display: block;
                left: 60px;
                position: absolute;
                width: 200px;
                height: auto !important;
                overflow: hidden;
                background-color: $sidebar-bg-color;
                border-bottom-right-radius: $border-radius;

                li a {
                    padding-left: 20px;

                    span {
                        padding-left: 0;
                    }
                }
            }
        }
    }

    .nav-item .nav-link[aria-expanded="true"]::after,
    .nav-item .nav-link[aria-expanded="false"]::after {
        display: none;
    }
}

.sidebar-sticky {
    position: relative;
    top: 0;
    height: calc(100vh - 48px);
    padding-top: .5rem;
    overflow-x: hidden;
    overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
}

@supports ((position: -webkit-sticky) or (position: sticky)) {
    .sidebar-sticky {
        position: -webkit-sticky;
        position: sticky;
    }
}