html,body{height:100%}body{display:flex;align-items:center;padding-top:40px;padding-bottom:40px;background-color:#fff}.form-signin{width:100%;max-width:330px;padding:15px;margin:auto}.form-signin .form-control{position:relative;box-sizing:border-box;height:auto;padding:10px;font-size:16px}.form-signin .form-control:focus{z-index:2}