softadvice Hi
As apparently seen, You seem to be using sativafx template which is based on gantry framework which uses its own Layout Manager and grid classes henceforth there are several conflicts in terms of CSS and styling relating to layout adaption as Gantry and JA Builder are both based on bootstrap however, the HTML structure of particular sections of the template layout rendering are varied for both henceforth, the layout is breaking in instances
JA builder as component is being rendered in the main-body area of the template however, the parent container width are being rendered through the html tags by the parent template
Try add this to css file and adjust width value accordingly :
#rt-mainbody,.rt-container{width: 1400px !important;}
or you may find the specific option in template being used to increase container width
