.slick-prev, .slick-next {
  background: none !important;
}
.slick-prev::before, .slick-next::before {
	display: none ;
}
button.slick-prev.slick-arrow {
    background: url(https://sprecherschneider.ch/wp-content/plugins/maxgalleria/images/icons/arrow-style-l-wt.png) no-repeat scroll left transparent !important;
    display: block;
    height: 50px;
    width: 30px;

}
button.slick-next.slick-arrow {
  background: url("https://sprecherschneider.ch/wp-content/plugins/maxgalleria/images/icons/arrow-style-r-wt.png")	no-repeat scroll center right transparent !important;
  display: block;
  height: 50px;
  width: 30px;
}