EvilWolf/header.php

## header.php
<?php
use Bitrix\Main\Page\Asset;
$AssetManager = Asset::getInstance();
//$AssetManager->addCss();
//$AssetManager->addJs();
//$AssetManager->addString();
?>
<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="ie=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title><? $APPLICATION->ShowTitle()?></title>

    <?php
    // Assets
    // 0. Fonts
    $AssetManager->addString('<link href="https://fonts.googleapis.com/css?family=Cuprum:400,400i,700,700i&amp;subset=cyrillic" rel="stylesheet">');

    // 1. Stylesheet
    $AssetManager->addCss(SITE_TEMPLATE_PATH . '/css/normalize.css');
    $AssetManager->addCss(SITE_TEMPLATE_PATH . '/css/grid.css');
    $AssetManager->addCss(SITE_TEMPLATE_PATH . '/css/main.css');

    // 2. Libraries and Scripts
    // jQuery and Modernizr
    $AssetManager->addString('<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>');
    $AssetManager->addString('<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>');

    // flickity
    $AssetManager->addString('<link rel="stylesheet" href="https://unpkg.com/flickity@2.0/dist/flickity.min.css">');
    $AssetManager->addString('<script src="https://unpkg.com/flickity@2.0/dist/flickity.pkgd.min.js"></script>');

    $AssetManager->addJs(SITE_TEMPLATE_PATH . '/js/main.js');

    // 3. Join BX and head
    CJSCore::Init(array("fx")); // fix BX not defined;
    $APPLICATION->ShowHead();
    ?>
</head>
<body>
<? $APPLICATION->ShowPanel() ?>