<html><head><style>p.normal {font-weight:normal;}p.light {font-weight:lighter;}p.thick {font-weight:bold;}p.thicker {font-weight:900;}</style></head><body><p class="normal">This is a paragraph.</p><p class="light">This is a paragraph.</p><p class="thick">This is a paragraph.</p><p class="thicker">This is a paragraph.</p></body></html>