check posts

templates/i-posts.html

@@ -6,7 +6,7 @@
     <div class="card blue-grey darken-1">
     {% endif %}
         <div class="row" id="post-{{ posto._key }}"> 
-            <div class="col s4">
+            <div class="col s4 m12">
                 <div class="card-image">
                     <div class="hex-main">
                         <div class="hex-container">

templates/main-page.html

@@ -5,7 +5,7 @@
 {% include 'navbar.html' %}
 <div class="container">
     <div class="row">
-        <div class="col s4 center">
+        <div class="col s4 m12 center">
             <div class="card">
                 <div class="card-image">
                     <img class="img-responsive" src="https://static.vdk2ch.ru/test-public/sin.jpg" height="400px" width="320px">