Zabbix

..F....... [ZBX-21748] fixed background of close button in message box for dark theme

Merge in ZBX/zabbix from feature/ZBX-21748-6.0 to release/6.0

* commit '2e63757e61ab27f71295f000ecc639c61b831ceb':
  ..F....... [ZBX-21748] fixed message button background color and button text color in dark and hc-dark themes
  ..F....... [ZBX-21748] fixed background of close button in message box for dark theme
  ..F....... [ZBX-21748] fixed background of close button in message box for dark theme