nt = 'Start';
        }
      }

      toggleMute() {
        this.isMuted = !this.isMuted;

        const unmutedIcon = this.muteBtn.querySelector( '.mute-icon.unmuted' );
        const mutedIcon = this.muteBtn.querySelector( '.mute-icon.muted' );

        if ( this.isMuted ) {
          unmutedIcon.style.display = 'none';
          mutedIcon.style.display = 'block';
        } else {
          unmutedIcon.style.display = 'block';
          mutedIcon.style.display = 'none';
        }

        this.muteBtn.c