.bg {
    background: linear-gradient(135deg, #1e3c72, #2a5298, #4facfe, #00f2fe);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}
.login-form {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding-top: 40px;
    width: 350px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}