Navigation sidebar animated

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

Source: bootstrapious.com

Navigation sidebar animated

$(document).ready(function () {
    $('#sidebarCollapse').on('click', function () {
        $('#sidebar').toggleClass('active');
        $(this).toggleClass('active');
    });
});

Source: bootstrapious.com

Navigation sidebar animated

#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);
}

Source: bootstrapious.com

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