button hover effect

a.et_pb_button.et_pb_button_1.et_pb_bg_layout_light {
    font-size: 0;
    padding: 10px 33px;
    background-image:  url(image_link);
    background-size:  contain;
    background-repeat:  repeat;
}

a.et_pb_button.et_pb_button_1.et_pb_bg_layout_light:hover {
    padding: 10px 86px;
}