src/SpeedUpEssentials/Helper/Spritify.php
public function getCss($id) {
        $total = $this->total_size();
        $top = $total["height"];
        $css = "";
        foreach ($this->images as $image) {
            if ($image["id"] == $id) {
                $css .= "background-position:" . ($image["width"] - $total["width"]) . "px " . ($top - $total["height"]) . "px;";
                $css .= "background-repeat:no-repeat;";
                //$css .= "width: " . $image['width'] . "px; ";
                //$css .= "height: " . $image['height'] . "px; ";
            }
            $top -= $image["height"];
        }
        return $css;
    }
public function getCss($id) {
        $total = $this->total_size();
        $top = $total["height"];
        $css = "";
        foreach ($this->images as $image) {
            if ($image["id"] == $id) {
                $css .= "background-position:" . ($image["width"] - $total["width"]) . "px " . ($top - $total["height"]) . "px;";
                $css .= "background-repeat:no-repeat;";
                //$css .= "width: " . $image['width'] . "px; ";
                //$css .= "height: " . $image['height'] . "px; ";
            }
            $top -= $image["height"];
        }
        return $css;
    }
/*
generates css code using ID provided when adding images or pseido ID "elem"
$path parameter (optional) - takes path to already generated css_sprite file or uses default file for pseudo code generation