core-bundle/src/Resources/contao/dca/tl_style_sheet.php
public function listStyleSheet($row)
	{
		$cc = '';
		$media = Contao\StringUtil::deserialize($row['media']);

		if ($row['cc'] != '')
		{
			$cc = ' &lt;!--['. $row['cc'] .']&gt;';
		}

		if ($row['mediaQuery'] != '')
		{
			return '<div class="tl_content_left">'. $row['name'] .' <span style="color:#999;padding-left:3px">@media '. $row['mediaQuery'] . $cc .'</span>' . "</div>\n";
		}
		elseif (!empty($media) && \is_array($media))
		{
			return '<div class="tl_content_left">'. $row['name'] .' <span style="color:#999;padding-left:3px">@media '. implode(', ', $media) . $cc .'</span>' . "</div>\n";
		}
		else
		{
			return '<div class="tl_content_left">'. $row['name'] . $cc ."</div>\n";
		}
	}
public function listStyleSheet($row)
	{
		$cc = '';
		$media = Contao\StringUtil::deserialize($row['media']);

		if ($row['cc'] != '')
		{
			$cc = ' &lt;!--['. $row['cc'] .']&gt;';
		}

		if ($row['mediaQuery'] != '')
		{
			return '<div class="tl_content_left">'. $row['name'] .' <span style="color:#999;padding-left:3px">@media '. $row['mediaQuery'] . $cc .'</span>' . "</div>\n";
		}
		elseif (!empty($media) && \is_array($media))
		{
			return '<div class="tl_content_left">'. $row['name'] .' <span style="color:#999;padding-left:3px">@media '. implode(', ', $media) . $cc .'</span>' . "</div>\n";
		}
		else
		{
			return '<div class="tl_content_left">'. $row['name'] . $cc ."</div>\n";
		}
	}
List a style sheet

@param array $row

@return string