DOCTYPE html PUBLIC W3C DTD XHTML1.0Transitional EN http www.w3.orgTR xhtml1DTD xhtml1transitional.dtd html xmlns http www.w3.org1999xhtml xml lang en head meta http equiv Content Type content text html charset gb2312style body margin0padding0overflow hidden.city width100position fixed bottom0px z index100.city img width100style title html5夜景放烟花绽放动画效果title head body onselectstart return false div style h