Blackberry browser automatically inserts a blue background

I need to create a web application to work in the Blackberry browser. I ran into a problem:

On different pages there are several text fields that are provided with the CSS class. I needed to use the border property to give them everything - 1px solid Black. But when you include this border property in Blackberry, there is an open question. As soon as I click on the edit box, the Blackberry browser somehow fills the text box with a blue background. Please note that this behavior is not observed on iPhone and Android. The Blackberry browser seems to be using its default behavior. Is there a way to stop the automatic behavior of the Blackberry browser, for example, some css or javascript property or meta tag? Has anyone else encountered a similar problem?

For more research, I found that the border does not make the background blue. But, as soon as we enable the border property, it highlights this element with its default blue color. (Similarly, this happens in the case of taps in the images). I disabled it using the -webkit-tap-highlight-color property. But it works on the iPhone, but not on the Blackberry.