src/components/auth/Join.jsx

@@ -381,7 +381,7 @@ export default function Join() {
                       </th>
                       <td>
                         <div className="input-wrap" style={{ width: '200px' }}>
-                          <input type="text" id="email" name="email" className="input-light" maxLength={50} ref={emailRef} />
+                          <input type="text" id="email" name="email" className="input-light" maxLength={30} ref={emailRef} />
                         </div>
                       </td>
                     </tr>