/* zlomek */
.fraction {max-width: 16em; height: 3em; margin: -0.8em 0.5em -0.8em 0.5em; text-align: center; display: block; float: left;}
/* čitatel */
.numerator {height: 1.5em; border-bottom: 1px solid #000000; display: block; float: none;}
/* jmenovatel */
.denominator {height: 1.5em; margin: 0; display: block; float: none;}
/* definice promennych */
dl {margin: 0 0 1.5em 0;}
dt, dd {display: block; vertical-align: top;}
dt {margin: 0.5em 0 0 0;}
dt {font-style: italic;}
dd {margin: -1.5em 0 0 5em;}