diff --git a/source/index.html b/source/index.html
index 273982e..31dafa0 100644
--- a/source/index.html
+++ b/source/index.html
@@ -15,7 +15,7 @@
       <span class="visually-hidden" hidden>Логотип</span>
     </a>
     <nav class="main-nav">
-      <button clas="main-nav__toggle" type="button">
+      <button class="main-nav__toggle" type="button">
         <span class="visually-hidden">Открыть меню</span>
       </button>
       <div class="main-nav__container">
@@ -106,7 +106,7 @@ <h2 class="working-basics__title">Как это работает</h2>
     <article class="demonstrating-example">
       <div class="demonstrating-example__wrapper">
         <div class="demonstrating-example__left">
-          <h2 classs="demonstrating-example__title">
+          <h2 class="demonstrating-example__title">
             Живой пример
           </h2>
           <div class="demonstrating-example__content">