#sidebarCollapse {
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
}

#sidebarCollapse span {
    width: 80%;
    height: 2px;
    margin: 0 auto;
    display: block;
    background: #fff;
    transition: all 0.8s cubic-bezier(0.810, -0.330, 0.345, 1.375);
}

#sidebarCollapse span:first-of-type {
    /* rotate first one */
    transform: rotate(45deg) translate(2px, 2px);
}
#sidebarCollapse span:nth-of-type(2) {
    /* second one is not visible */
    opacity: 0;
}
#sidebarCollapse span:last-of-type {
    /* rotate third one */
    transform: rotate(-45deg) translate(1px, -1px);
}

#sidebarCollapse.active span {
    /* no rotation */
    transform: none;
    /* all bars are visible */
    opacity: 1;
    margin: 5px auto;
}

#sidebar {
    transition: all 0.6s cubic-bezier(0.945, 0.020, 0.270, 0.665);
    transform-origin: center left;
    /* width: 305px !important; */
}

#sidebar.active {
    margin-left: -300px;
    transform: rotateY(100deg); /* Rotate sidebar vertically by 100 degrees. */
    width: 305px !important;
}

.main-panel {
    width:100% !important;
}

.navbar-toggler{
    display: none !important;
}

@media (max-width: 768px) {
    /* Reversing the behavior of the sidebar: 
       it'll be rotated vertically and off canvas by default, 
       collapsing in on toggle button click with removal of 
       the vertical rotation.   */
    #sidebar {
        margin-left: 0px;
        width: 0px !important;
        transform: rotateY(100deg);
    }
    #sidebar.active {
        margin-left: 0;
        width: 300px !important;
        transform: none;
    }

    /* Reversing the behavior of the bars: 
       Removing the rotation from the first,
       last bars and reappear the second bar on default state, 
       and giving them a vertical margin */
    #sidebarCollapse span:first-of-type,
    #sidebarCollapse span:nth-of-type(2),
    #sidebarCollapse span:last-of-type {
        transform: none;
        opacity: 1;
        margin: 5px auto;
    }

    /* Removing the vertical margin and make the first and last bars rotate again when the sidebar is open, hiding the second bar */
    #sidebarCollapse.active span {
        margin: 0 auto;
    }
    #sidebarCollapse.active span:first-of-type {
        transform: rotate(45deg) translate(2px, 2px);
    }
    #sidebarCollapse.active span:nth-of-type(2) {
        opacity: 0;
    }
    #sidebarCollapse.active span:last-of-type {
        transform: rotate(-45deg) translate(1px, -1px);
    }
}