Add to cart button issue product page

[Sivadarshan]

I'm using dawn theme latest version in that in that product page add to cart button made to adjust in 1 line but when we  add more products it shows the error message we cant add more, which hides the ATC button so that, i need to make the error message to in below buy now button

Thank's in advance

Where to change the code, please guide me i'll make changs