Add submit button.

index.php

@@ -47,6 +47,10 @@ if(isset($_POST['input']) && isset($_POST['type'])) {
                 <option value="MD5">MD5</option>
             </select>
 
+            <br>
+
+            <input type="submit" class="btn btn-primary btn-lg" value="Hash">
+
 		</form>
 
 		<?php