body{
    background-image: url(loginwallpaper.jpg);
}
 
img{

    height: 120px;
    width: 180px;
    margin-top: 30px;
} 

.header{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.login_heading{
    margin-top: 50px;
    color: white;
}

.input-group{
    padding-left: 20px;
    padding-right: 20px;
}

.btn{
    margin-left: 20px;
}