Latest news section arrows do not display

Hello! I have created a child theme of Zerif-Lite on a work press network site without adding anything except the style.css to my child theme. In my lastest news sections on my page http://www.beteltrondheim.no/ny/ I can click to the right and the left of the slider and it moves, but the arrows does not display. I have no plugins activated. Do anyone know what I can do to make the arrows display?

My Child theme folder is name zerif-lite-child2 and the style.css of my child theme consist of:

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

/*
Theme Name: Zerif Lite Child2
Theme URI: http://themeisle.com/themes/zerif-lite-child/
Author: ThemeIsle
Author URI: http://themeisle.com
Template: zerif-lite
Description: Zerif LITE is a free one page WordPress theme. It's perfect for web agency business,corporate business,personal and parallax business portfolio, photography sites and freelancer.Is built on BootStrap with parallax support, is responsive, clean, modern, flat and minimal. Zerif Lite is ecommerce (WooCommerce) Compatible, WPML, RTL, Retina-Ready, SEO Friendly and with parallax, full screen image is one of the best business themes.
Version: 1.8.2.1
License: GNU General Public License version 3
License URI: license.txt
Text Domain: zerif-lite-child2
Domain Path: /languages/
Tags: black, gray, red, white, one-column, two-columns, right-sidebar,fixed-layout,light,front-page-post-form,full-width-template,rtl-language-support,sticky-post,theme-options,responsive-layout, custom-background, custom-menu, editor-style, featured-images, threaded-comments, translation-ready,photoblogging
*/
@import url("../zerif-lite/style.css");