.login-logo  b {
  color: #3157a7;
  text-shadow: 1px 1px 1px #6d91c7;
}
.login-logo  a {
  color: #6d91c7;
  text-shadow: 1px 1px 1px #3157a7;
}
body {
  background-image: url("../img/sistema/fondo.jpg");
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  background-color: transparent;
}
.login-logo {
  background-color: rgba(100%,255%,255%,.3);
  border: 1px solid #6d91c7;
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;

}
.login-card-body{
  border-radius: 2px;
  box-shadow: 3px 3px 3px 1px rgba(0, 0, 0, 0.6);

}