html {
  height: 100%;
}

body {
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-color: #cecece;
}

#bodyBK {
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-color: rgba(0, 0, 0, 0.5);
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url(../src/login-register.jpg);
}