html {
  height: 100%;
}

body {
  height: 100%;
  margin: 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-image: linear-gradient(#cccccc, #ffffff);  
}

.centered-box {
  width: 95%;
  max-width: 400px;
  margin: 0px auto 0px auto;
}

.box-header {
  text-align: center;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-bottom: 1px solid #bbbbbb;
  padding: 10px;
  background-color: #000055;
  color: white;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
}

.box-form {
  background-color: #ffffff;
  padding: 20px 30px;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
}