css - change - select option hover background color javascript

How to change colour of blue highlight on select box dropdown (5)

I believe you are looking for the outline CSS property (in conjunction with active and hover psuedo attributes):

/* turn it off completely */
select:active, select:hover {
  outline: none

/* make it red instead (with with same width and style) */
select:active, select:hover {
  outline-color: red

Full details of outline, outline-color, outline-style, and outline-width https://developer.mozilla.org/en-US/docs/Web/CSS/outline

How do I change the blue highlight on this dropdown please?

link to select box demo

Here's the code:-


select { border:0; color:#EEE; background:transparent;
font-size:20px; font-weight:bold; padding:2px 10px; width:378px;
*width:350px; *background:#58B14C; -webkit-appearance: none; }

#mainselection { overflow:hidden; width:350px;
-moz-border-radius: 9px 9px 9px 9px;
-webkit-border-radius: 9px 9px 9px 9px;
border-radius: 9px 9px 9px 9px;
box-shadow: 1px 1px 11px #330033;
background: url("http://www.danielneumann.com/wp-content/uploads/2011/01/arrow.gif") no-repeat scroll 319px 5px #58B14C; 


    <div id="mainselection">
    <option>Select an Option</option>
    <option>Option 1</option>
    <option>Option 2</option>

I'd like to change the highlight color to gray if this is possible.

Just found this whilst looking for a solution. I've only tested it FF 32.0.3

box-shadow: 0 0 10px 100px #fff inset;

To both style the hover color and avoid the OS default color in Firefox, you need to add a box-shadow to both the select option and select option:hover declarations, setting the color of the box-shadow on "select option" to the menu background color.

select option {
  background: #f00; 
  color: #fff; 
  box-shadow: inset 20px 20px #f00

select option:hover {
  color: #000; 
  box-shadow: inset 20px 20px #00f;

Yes, you could change the background of select but you will not be able to change the highlight color (when you hover) by using CSS!

You have few options:

  1. Is to convert select into ul, li kind of select and do anything you want with this.

  2. Use libraries like Choosen, Select2 or jQuery Form Styler . These allow you to style in much more broad and cross-browser way.

try this.. I know it's an old post but it might help somebody

select option:hover,
    select option:focus,
    select option:active {
        background: linear-gradient(#000000, #000000);
        background-color: #000000 !important; /* for IE */
        color: #ffed00 !important;

    select option:checked {
        background: linear-gradient(#d6d6d6, #d6d6d6);
        background-color: #d6d6d6 !important; /* for IE */
        color: #000000 !important;