Flashmessage warning text is not visible in maintenance mode:
admin is in maintenance mode
Flashmessage warning text : "The website is currently undergoing maintenance"
but not visible , this text white colour
Solution : oc-content/themes/gamma/css/style.css
/* MAINTENANCE */
#maintenance {height:auto!important;color:#fff!important;}
delete color:color:#fff!important;
/* MAINTENANCE */
#maintenance {height:auto!important;}
or
change
/* MAINTENANCE */
#maintenance {height:auto!important;color:#FF0000!important;}