jitsi-meet/css/_animations.scss

/**
* Project animations
**/

/**
 *   Slide in animation for extended toolbar (inner) panel.
 */

// FIX: Can't use percentage because of breaking animation when width is changed
// (100% of 0 is also zero) Extracted this to config variable.
@include keyframes(slideInExt) {
    from { left: -$sidebarWidth; }
    to   { left: 0; }
}

@include keyframes(slideOutExt) {
    from { left: 0; }
    to   { left: -$sidebarWidth; }
}