html { 
  background: url(../img/fondo_login_2.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
body{
	background: transparent;
}
header{
	background: #000;
	color: #ddd;
	padding: 20px;
	text-align: center;
	font-size: 20px;
}
#loginApp{
	max-width: 400px;
	width: 100%;
	margin: 150px auto 0;
}
#lblError{
	color: red;
	text-decoration: underline;
	font-weight: bold;
	font-size: 15px;
}
.input-group input{
	background: rgba(255,255,255,.7);
}
.input-group .input-group-addon{
	background: rgba(255,255,255,.7);
}
.cuerpoFormulario{
	padding: 20px;
}
.cuerpoLogin{
	color: #fff;
	padding: 20px;
	background: rgba(0,0,0,.6);
}
::-webkit-input-placeholder { /* Chrome/Opera/Safari */
  color: #000;
}
::-moz-placeholder { /* Firefox 19+ */
  color: #000;
}