body {
   background: url("fond_ynh.jpg");
}

.btn {
    border: 1px solid #bbb!important;
}

.btn-primary {
    background: #103128!important;
}

.btn-primary:hover, .btn-primary:focus {
    background: #246c59!important;
}

.btn-success {
    background: #d2a02a!important;
}

.btn-success:hover, .btn-success:focus {
    background: #f9be32!important;
}