moodle_local_treestudyplan/scss/psidebar.scss

#p-sidebar-wrapper {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    overflow: hidden;

    #p-sidebar-contentwrapper {
        flex: 1 1 auto;
        transition: all 0.3s ease-in-out;
        overflow-y: auto;
    }

    .p-sidebar {
        position: relative;
        top: 0;
        min-width: 320px;
        width: auto;
        max-width: 430px;
        height: 100vh;
        max-height: 100%;
        margin: 0;
        outline: 0;
        -webkit-transform: translateX(0);
        transform: translateX(0);
        background-color: var(--light);
        display: block;
        transition: all 0.3s ease-in-out;
        z-index: 100;
        --p-sidebar-hideoffset: -320px;
        //overflow-y: auto;

        &.p-sidebar-shadow {
            box-shadow: 0 .5rem 1rem rgba(0, 0, 0, 0.15);
        }
        &.shown {
            display: block;
        }
        &:not(.p-sidebar-right).hidden {
            margin-left: var(--p-sidebar-hideoffset);
        }
        &.p-sidebar-right.hidden {
            margin-right: var(--p-sidebar-hideoffset);
        }
    }
}