ins { padding: 0 0.125em; text-decoration: none; background-color: lightgreen } del { padding: 0 0.125em; text-decoration: none; background-color: pink; } mark { padding: 0 0.125em; } .note { padding: 0 0.125em; background-color: lightblue; } aside.note { padding: 0.5em 1em; } u { text-decoration: none; border-bottom: 3px red dashed; }