* {
  box-sizing: border-box;
}

body {
   font-size: top;
   background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.text-center {
  font-size: 40px;
  color: rgb(131, 130, 130);
}

.form-group {
  padding: 0;
  margin: auto;
  color: slategray;
}

.img-fluid{
  width: 40%;
}


#contraseña {
  padding: 0;
  border: 0;
}

#logo {
  height: 100%;
  width: 650px;
  opacity: 80%;
}