h1, h2, h3, h4, h5, h6 {align: center; color : red}
hr {color: blue}
body { background-color: white }
.code { color: blue}
.var { color: blue}
.math { color: blue}
.def {color: red}
.figure {color: red}
.table {color: red}
.coderule { color: blue}
.tablerule { color: red}