Hey How can I add border from right and left side of form using standard option's ? Or I have to use customize stylesheet?
You can do this through your stylesheet easily, add the snippet below to your Composer stylesheet and customise as necessary
"style.html.body" and "style.htmlform.page" are the named styles for the Composer widgets
Thanks Ben and Glenn your answers was very helpfull :)
You will need to ensure internal fields are visible by clicking the cog icon in the structure pane:
Then you can add styling attributes to the framework components such as htmlOuterArea or htmlInnerArea