html,
body {
  height: 100%;
}

body {
  background-color: white;
}

.footer, .header {
  width: 100%;
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
  text-align: center;
}

.header {
  margin-top: 40px;
  margin-bottom: 40px;
}

.container-signin {
  display: -ms-flexbox;
  display: -webkit-box;
  display: flex;
  -ms-flex-align: center;
  -ms-flex-pack: center;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: center;
  justify-content: center;
  padding-top: 40px;
  padding-bottom: 40px;  
}

.container-alert, .container-status {
  max-width: 600px;
}

.form-signin {
  width: 100%;
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
}

form input, form textarea {
  margin-bottom: 10px;
}