Dears,

i create a website , it is contain a master page , the main issue that i want to make the content place holder's corners be rounded.........

in the beginning of the code i insert ToolkitScriptManager.






Also i inserted a panel with content place holder .







and finally i add the rounded corners extender






when i run my website , the panel appeared with it's color [white] in each page but not rounded .........WHY ??

NOTE : when i press on TargetControlID in the properties menu , panel 1 control not appeared , i type it in HTML code .