make fields required in html

templates/login.html

@@ -22,9 +22,9 @@
             {% endfor %}
         {% endif %}
         {% endwith %}
-        <input name="username" type="text" placeholder="Username">
+        <input name="username" type="text" placeholder="Username" required>
         <br><br>
-        <input name="password" type="password" placeholder="Password">
+        <input name="password" type="password" placeholder="Password" required>
         <br>
         <br>
         <button type="submit">Log in</button>

templates/post.html

@@ -35,10 +35,10 @@
         <form method="post" enctype="multipart/form-data">
             <h2>Post</h2>
             <p>Image</p>
-            <input type="file" name="file">
+            <input type="file" name="file" required>
             <br>
             <p>Text</p>
-            <input name="title" type="text" placeholder="Text">
+            <input name="title" type="text" placeholder="Text" required>
             <br><br>
             <input class="submit" type="submit" value="Post">
         </form>

templates/signup.html

@@ -23,9 +23,9 @@
             {% endfor %}
         {% endif %}
         {% endwith %}
-        <input name="username" type="text" placeholder="Username">
+        <input name="username" type="text" placeholder="Username" required>
         <br><br>
-        <input name="password" type="password" placeholder="Password">
+        <input name="password" type="password" placeholder="Password" required>
         <br><br>
         <button type="submit">Sign up</button>
         <br><br>