html,
body {
  height: 100%;
  background-image: url('/img/phone.jpg');
  background-repeat: no-repeat;

  background-position: -10px -30px;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: 100% 120%;
  -webkit-background-size: 100% 120%;
  -o-background-size: 100% 120%;
  -moz-background-size: 100% 120%;
  -ms-background-size: 100% 120%;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

.form-signin {
  width: 100%;
  max-width: 100%;
  margin: auto;
  margin-top:60%;
}