How would you place a 'required asterisk' image in front of the first letter of a label using only css?

Question

Is it possible to place a 'required asterisk' image in front of the first letter of a label only using css? The text of the label is right aligned, so there is a varying length of space in front of the text of each label.

Answer 1

.foo:before {
    content : "* ";
    color   : red;
}