diff --git a/src/components/Article/Article.js b/src/components/Article/Article.js
index 34b937f..744bbc1 100644
--- a/src/components/Article/Article.js
+++ b/src/components/Article/Article.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types'
 import SEO from '../SEO/SEO'
 import Img from "gatsby-image"
 import slugify from '../../helpers/slugify'
@@ -84,4 +85,18 @@ const Article = ({ data: { slug, title, image, description, category, tags, time
   )
 }
 
-export default Article
\ No newline at end of file
+export default Article
+
+Article.propTypes = {
+  data: PropTypes.shape({
+    slug: PropTypes.string,
+    title: PropTypes.string,
+    image: PropTypes.object,
+    description: PropTypes.string,
+    category: PropTypes.string,
+    tags: PropTypes.array,
+    time: PropTypes.string,
+    date: PropTypes.string
+  }),
+  html: PropTypes.string
+}
\ No newline at end of file
diff --git a/src/components/Articles/ArticleCard/ArticleCard.js b/src/components/Articles/ArticleCard/ArticleCard.js
index e16e9dc..109341f 100644
--- a/src/components/Articles/ArticleCard/ArticleCard.js
+++ b/src/components/Articles/ArticleCard/ArticleCard.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types'
 import slugify from '../../../helpers/slugify'
 import Img from "gatsby-image"
 import { Link } from 'gatsby'
@@ -32,4 +33,15 @@ const ArticleCard = ({ data: { slug, title, image, category, description, tags }
   )
 }
 
-export default ArticleCard
\ No newline at end of file
+export default ArticleCard
+
+ArticleCard.propTypes = {
+  data: PropTypes.shape({
+    slug: PropTypes.string,
+    title: PropTypes.string,
+    image: PropTypes.object,
+    category: PropTypes.string,
+    description: PropTypes.string,
+    tags: PropTypes.array
+  })
+}
\ No newline at end of file
diff --git a/src/components/Articles/Articles.js b/src/components/Articles/Articles.js
index 593c484..fc33370 100644
--- a/src/components/Articles/Articles.js
+++ b/src/components/Articles/Articles.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types'
 import ArticleCard from './ArticleCard/ArticleCard'
 import './Articles.scss'
 
@@ -12,4 +13,10 @@ const Articles = ({ data: { edges } }) => {
   )
 }
 
-export default Articles
\ No newline at end of file
+export default Articles
+
+Articles.propTypes = {
+  data: PropTypes.shape({
+    edges: PropTypes.array
+  })
+}
\ No newline at end of file
diff --git a/src/components/Footer/Footer.js b/src/components/Footer/Footer.js
index 8b6947b..2416ccc 100644
--- a/src/components/Footer/Footer.js
+++ b/src/components/Footer/Footer.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import { Link } from 'gatsby'
 import PropTypes from 'prop-types'
 import './Footer.scss'
 
@@ -19,25 +20,25 @@ const Footer = ({ title }) => {
             <div className="links-nav">
               <p>Навигация</p>
               <ul>
-                <li><a href="/">Статьи</a></li>
-                <li><a href="/">О сайте</a></li>
-                <li><a href="/">Ресурсы</a></li>
+                <li><Link to='/articles'>Статьи</Link></li>
+                <li><Link to='/about'>О сайте</Link></li>
+                <li><Link to='/books'>Ресурсы</Link></li>
               </ul>
             </div>
             <div className="links-contacts">
               <p>Контакты</p>
               <ul>
-                <li><a href="/">Форма обратной связи</a></li>
+                <li><Link to='/contacts'>Форма обратной связи</Link></li>
                 <li><a href="/">Телеграмм</a></li>
-                <li><a href="/">Почта</a></li>
+                <li><a href="mailto:support@devthread.ru">Почта</a></li>
               </ul>
             </div>
             <div className="links-social">
               <p>Социальные сети</p>
               <ul>
-                <li><a href="/">Наш телеграмм канал</a></li>
-                <li><a href="/">Яндекс.Дзен</a></li>
-                <li><a href="/">Твиттер</a></li>
+                <li><a href="https://t.me/devthread" rel='noreferrer' target='_blank'>Наш телеграмм канал</a></li>
+                <li><a href="/" target='_blank'>Яндекс.Дзен</a></li>
+                <li><a href="https://twitter.com/devthread" rel='noreferrer' target='_blank'>Твиттер</a></li>
               </ul>
             </div>
           </div>
diff --git a/src/components/Offers/Offers.js b/src/components/Offers/Offers.js
index ef4b642..42dffeb 100644
--- a/src/components/Offers/Offers.js
+++ b/src/components/Offers/Offers.js
@@ -3,8 +3,10 @@ import usePopularArticlesQuery from '../../hooks/usePopularArticlesQuery'
 import useTagsQuery from '../../hooks/useTagsQuery'
 import './Offers.scss'
 import Popular from './Popular/Popular'
-import PopularItem from './Popular/PopularItem'
 import Tags from './Tags/Tags'
+import Subscription from './Subscription/Subscription'
+
+import PopularItem from './Popular/PopularItem'
 import TagItem from './Tags/TagItem'
 
 import BooksIcon from '../../images/books-icon.svg'
@@ -32,17 +34,7 @@ const Offers = () => {
           </div>)}
         </div>
       </div>
-      <div className="offers-subscription offer-box">
-        <div className="offers-subscription__heading offer-heading">
-           Читайте нас в Telegram
-        </div>
-        <div className="offers-subscription__content">
-          <p>
-            В нашем канале telegram вы не пропустите новые статьи, присоединяйтесь к другим разработчикам
-          </p>
-          <a href="https://t.me/devthread" rel='noreferrer' target="_blank" className="btn-primary">Подписаться</a>
-        </div>
-      </div>
+      <Subscription />
     </div>
   )
 }
diff --git a/src/components/Offers/Popular/PopularItem.js b/src/components/Offers/Popular/PopularItem.js
index 60db7cb..6d2ad9e 100644
--- a/src/components/Offers/Popular/PopularItem.js
+++ b/src/components/Offers/Popular/PopularItem.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types'
 import { Link } from 'gatsby'
 
 import ViewsIcon from '../../../images/views-icon.svg'
@@ -17,4 +18,9 @@ const PopularItem = ({ slug, title }) => {
   )
 }
 
-export default PopularItem
\ No newline at end of file
+export default PopularItem
+
+PopularItem.propTypes = {
+  slug: PropTypes.string,
+  title: PropTypes.string
+}
\ No newline at end of file
diff --git a/src/components/Offers/Subscription/Subscription.js b/src/components/Offers/Subscription/Subscription.js
new file mode 100644
index 0000000..7c3dac6
--- /dev/null
+++ b/src/components/Offers/Subscription/Subscription.js
@@ -0,0 +1,18 @@
+import React from 'react';
+
+const Subscription = () => {
+  return (
+    <div className="offers-subscription offer-box">
+      <div className="offers-subscription__heading offer-heading">
+          Читайте нас в Telegram
+      </div>
+      <div className="offers-subscription__content">
+        <p>
+          В нашем канале telegram вы не пропустите новые статьи, присоединяйтесь к другим разработчикам
+        </p>
+        <a href="https://t.me/devthread" rel='noreferrer' target="_blank" className="btn-primary">Подписаться</a>
+      </div>
+    </div>
+  )
+}
+export default Subscription
\ No newline at end of file
diff --git a/src/components/Offers/Tags/TagItem.js b/src/components/Offers/Tags/TagItem.js
index 598aa42..cd10bba 100644
--- a/src/components/Offers/Tags/TagItem.js
+++ b/src/components/Offers/Tags/TagItem.js
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types'
 import { Link } from 'gatsby'
 import sligify from '../../../helpers/slugify'
 
@@ -10,4 +11,8 @@ const TagItem = ({ title }) => {
   )
 }
 
-export default TagItem
\ No newline at end of file
+export default TagItem
+
+TagItem.propTypes = {
+  title: PropTypes.string
+}
\ No newline at end of file