User action

• :focus - using keyboard (or mouse)
• :hover - hover with mouse)
• :checked for certain for elements
• :visited for links

Examples

Button

/* Any button over which the user's pointer is hovering */
button:hover {
  color: blue;
}

Links

a:link,
a:visited {
    color: rebeccapurple;
    font-weight: bold;
}

a:hover {
    color:hotpink;
}