У вашего броузера проблема в совместимости с HTML5
http://www.framesdirect.com/include/information/face_shape_guide.aspx
Heart shaped faces have curvature to them, with a broad forehead and cheekbones that narrow down towards a small chin. To add width to your lower face, consider bottom heavy frames. Also low set temples and narrow round frames will soften your forehead and give you a fuller, balanced look.