Change the Display Size for a Mashup or App
Open preferences for the mashup or app portlet. In the Configure Portlet Settings section, update these preferences:
Height: enter the specific height, in pixels, to display this mashup or app.
Width: enter
auto to have the mashup or app completely fill the width of the current column in this portal page. Or enter the specific width, in pixels, to display this mashup or app.
Save your changes.