diff --git a/public/index.html b/public/index.html
index 57e2629..b212455 100644
--- a/public/index.html
+++ b/public/index.html
@@ -24,11 +24,11 @@
 
                 <div class="GamePage d-none">
                     <div class="input-group example">
-                        <input class="form-control" id="first-input" type="number" />
+                        <input class="form-control" id="first-input" type="number" pattern="\d*" />
                         <span class="input-group-text" id="sign-span">+</span>
-                        <input class="form-control" id="second-input" type="number" />
+                        <input class="form-control" id="second-input" type="number" pattern="\d*" />
                         <span class="input-group-text">=</span>
-                        <input class="form-control" id="sum-input" type="number" />
+                        <input class="form-control" id="sum-input" type="number" pattern="\d*" />
                     </div>
                     <button class="btn btn-warning" id="check-button" type="button">Проверить</button>
                 </div>