body{
 background-image: url('/Demo-Banner.png') !important;
 color : white !important;   
background-size: cover;
background-repeat: no-repeat;
background-position: center;
background-attachment: fixed;
display: flex;
flex-direction: column;
} 

form[action="/Account/Login/ExternalLoginConfirmation?ReturnUrl=%2F"] legend {
    color: white;
} 

form[action="/Account/Login/ExternalLoginConfirmation?ReturnUrl=%2F"] .alert-danger {
    background-image: url(/Demo-Banner.png);
     color: white !important;
 }

 #Email
{
    color:white !important;
}