.nav-bar {
    transition: background-color 0.3s ease; /* Smooth background color transition */
}
.container {
    width: 100%;
}
@media (min-width: 640px) {
    .container {
        max-width: 640px;
    }
}
@media (min-width: 768px) {
    .container {
        max-width: 768px;
    }
}
@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
    }
}
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}
@media (min-width: 1536px) {
    .container {
        max-width: 1536px;
    }
}