How to remove animation when hovering over buttons?

Question

css

It is necessary to remove the animation, and leave the hover effects.
For clarity, I'm attaching a screenshot:

The page itself: tyk
js code: tyk
css code: tyk
I.e. when hovering over the gallery control buttons, they jump from bottom to top. How to turn it off?

Answer 1

At you costs transition: .4son all tags a(global style). Remove the transition selector for this:

.highslide-controls a {

    transition: none; /* Вот это добавь */

    background: url("../../../engine/classes/highslide/graphics/controlbar-black-border.gif");
    display: block;
    float: left;
    height: 30px;
    width: 30px;
    outline: none;
}

Answer 2

Delete in css file:

.highslide-controls .highslide-move a:hover {
    background-position: -120px -30px;
}