function screenr_not_fullscreen()
{
    return !screenr_is_fullscreen();
}
<?php

$default = apply_filters('screenr_default_slider_items', array(array('content_layout_1' => screenr_get_default_slider_content(), 'media' => array('url' => get_template_directory_uri() . '/assets/images/hero.jpg', 'id' => ''))));
$slider = new Screenr_Slider(get_theme_mod('slider_items', $default));
$autoplay = get_theme_mod('slider_autoplay', 7000);
if (!screenr_is_selective_refresh()) {
    ?>
<section id="<?php 
    echo esc_attr(get_theme_mod('slider_id', 'hero'));
    ?>
" class="section-slider screenr-section swiper-slider <?php 
    echo screenr_is_fullscreen() ? 'full-screen' : '';
    ?>
 fixed" >
<?php 
}
?>
    <div class="swiper-container" data-autoplay="<?php 
echo intval($autoplay);
?>
">
        <div class="swiper-wrapper">
            <?php 
echo $slider->render();
?>
        </div>
        <?php 
if ($slider->number_item > 1) {
    ?>
        <div class="swiper-button-prev"><i class="fa fa-angle-left" ></i> <div class="slide-count"> <span class="slide-current" >1</span> <span class="sep"></span> <span class="slide-total">3</span> </div></div>
        <div class="swiper-button-next"><i class="fa fa-angle-right" ></i> <div class="slide-count"> <span class="slide-current" >1</span> <span class="sep"></span> <span class="slide-total">3</span> </div> </div>