html,
body {
  height: 100%;
}
/*display: flex;*/
body {

  padding-top: 20px;
  padding-bottom: 40px;

}
.form-signin {
  width: 100%;
  max-width: 350px;
  padding: 15px;
  margin: 0 auto;
}

.form-signin .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
}