.parens {
border: 2px solid #000000; margin: 1px 3px 16 3; width: 36; padding: 2px 36px;
} .more-parens {
padding: 8 4 4 4px; width: 96; height: 113; margin: 12;
} .nested-parens {
width: 71; height: 6;
} .mixed-units {
margin: 2px 4em 1 5pc; padding: 6px 1em 2px 2;
}