Question

When the user selects one of the options in a <select> menu I don’t want it to be highlighted. How can I achieve this?

<select id="my_select_menu">
    <option id="1">Option 1</option> // do not highlight when selected
    <option id="2">Option 2</option> // do not highlight when selected
    ....
</select>

Answer 1

In your css put this

#my_select_menu
{
    outline: none;
}