Dropdown arrow is not displayed in Twitter bootstrap for Firefox browser

Question

Firefox browser does not display the arrow in a dropdown option. I can use Twitter bootstrap.

<select >
<option>one</option>
<option>two</option>
</select>

This is my coding. Chrome browser displayed the arrow but Firefox did not display the arrow .

Here I have attached the sample image. The dropdown arrow is missing in the image

How can I get FF to display it?

Answer 1

Actually having the same issue a moment ago.

After removing all of my CSS and anything that could have been causing this, actually found that the Firefox Responsive Design View is the cause.