[Plugin: Basic Google Maps Placemarks] Can't resize map

Hi,

No matter how I tried, I just can’t resize the map, is this something to do with my chosen template? What are my options to make this work? This is the page of the map: http://chow.ph/?page_id=22

Thanks!

http://ww.wp.xz.cn/extend/plugins/basic-google-maps-placemarks/