body { padding: 1em; }
h1, h2, h3, h4, h5, h6 { margin-top: 0.2em; margin-bottom: 0.2em; }
h1 { background-color: cyan; }
h2 { background-color: #88FF88; width: 9em; padding: 0 0.5em 0 0.9em; margin-bottom: 0.5em; }
h3 { border-left: 10px solid red; padding-left: 0.2em;}
p { margin: 1em; }