Remove Dotted Border/Outline of Focused Dropdown Menu

Remove dotted border/outline of focused dropdown menu

On windows 7 and IE9 no border/outline is shown, Instead a blue background is shown. The blue background and in your case the border/outline is managed by the OS. I suspect your are on a Mac?

Remove outline from select box in FF

How to remove Firefox's dotted outline on BUTTONS as well as links?

Cannot remove outline/dotted border from Firefox select drop down

Found my answer here: https://stackoverflow.com/a/18853002/1261316

It wasn't set as the correct answer, but it worked perfectly for me:

select:-moz-focusring {
    color: transparent;
    text-shadow: 0 0 0 #000;
}
select {
    background: transparent;
}

How to remove border of drop down list : CSS

The most you can get is:

select#xyz {
   border:0px;
   outline:0px;
}

You cannot style it completely, but you can try something like

select#xyz {
  -webkit-appearance: button;
  -webkit-border-radius: 2px;
  -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1);
  -webkit-padding-end: 20px;
  -webkit-padding-start: 2px;
  -webkit-user-select: none;
  background-image: url(../images/select-arrow.png), 
    -webkit-linear-gradient(#FAFAFA, #F4F4F4 40%, #E5E5E5);
  background-position: center right;
  background-repeat: no-repeat;
  border: 1px solid #AAA;
  color: #555;
  font-size: inherit;
  margin: 0;
  overflow: hidden;
  padding-top: 2px;
  padding-bottom: 2px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

How to remove the dotted white border around focused button text

These styles are declared at the UA level, so each browser has their own implementation (and in Firefox case, pseudo elements for targeting them).

In Firefox, you can use the ::-moz-focus-inner pseudo element:

button::-moz-focus-inner,
input[type="reset"]::-moz-focus-inner,
input[type="button"]::-moz-focus-inner,
input[type="submit"]::-moz-focus-inner {
    border: none;
}  

Remove outline from select box in FF

I found a solution, but it is mother of all hacks, hopefully it will serve as a starting point for other more robust solutions. The downside (too big in my opinion) is that any browser that doesn't support text-shadow but supports rgba (IE 9) won't render the text unless you use a library such as Modernizr (not tested, just a theory).

Firefox uses the text color to determine the color of the dotted border. So say if you do...

select {
  color: rgba(0,0,0,0);
}

Firefox will render the dotted border transparent. But of course your text will be transparent too! So we must somehow display the text. text-shadow comes to the rescue:

select {
  color: rgba(0,0,0,0);
  text-shadow: 0 0 0 #000;
}

We put a text shadow with no offset and no blur, so that replaces the text. Of course older browser don't understand anything of this, so we must provide a fallback for the color:

select {
  color: #000;
  color: rgba(0,0,0,0);
  text-shadow: 0 0 0 #000;
}

This is when IE9 comes into play: it supports rgba but not text-shadow, so you will get an apparently empty select box. Get your version of Modernizr with text-shadow detection and do...

.no-textshadow select {
  color: #000;
}

Enjoy.

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