jquery - How can you make buttons stretched only when the `navbar` is collapsed (Bootstrap)? -

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jsfiddle, https://jsfiddle.net/4tusk977/.

<!doctype html> <html> <head>   <meta charset="utf-8">   <meta http-equiv="x-ua-compatible" content="ie=edge">   <meta name="viewport" content="width=device-width, initial-scale=1">   <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css"> </head> <body>   <div class="container-fluid">     <nav class="navbar navbar-default">       <div class="navbar-header">         <a class="navbar-brand" href="#">...</a>         <button aria-expanded="false" class="collapsed navbar-toggle" data-target="#main_menu" data-toggle="collapse" type="button">           <span class="sr-only">toggle navigation</span>           <span class="icon-bar"></span>           <span class="icon-bar"></span>           <span class="icon-bar"></span>         </button>       </div>       <div class="collapse navbar-collapse" id="main_menu">         <form class="navbar-form navbar-right" id="main_menu_form" style="border: none;">           <input class="form-control" type="text" name="username" placeholder="user name">           <input class="form-control" type="password" name="password" placeholder="password">           <input class="btn btn-success" type="button" value="sign in">           <input class="btn btn-primary" type="button" value="sign up">         </form>       </div>     </nav>   </div>   <script src="bower_components/jquery/dist/jquery.js"></script>   <script src="bower_components/bootstrap/dist/js/bootstrap.js"></script> </body> </html>

i want both sign in , sign buttons stretched equally when navigation bar collapsed. have tried using flex box, succeed, ruins layout when navigation bar not collapsed. should do?

enter image description here

you can use @media css rule set values on selectors based on specific properties (like screen with).

@media screen , (max-width: 768px) {   .navbar-collapse input[type="submit"] {     width: 49%;   } }

here jsfiddle:
https://jsfiddle.net/4tusk977/2/





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