* {
    margin: 0;
    padding: 0;
    font-family: "Poppins", sans-serif;
    box-sizing: border-box;
}

.container {
    width: 100%;
    height: 100vh;
    background: linear-gradient(45deg, #5dfff2, #405DE6);
    background-position: center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    width: 100%;
    max-width: 440px;
    color: #000;
    text-align: center;
    padding: 50px 35px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    /* backdrop-filter may not work in some devices */
    backdrop-filter: blur(5px); 
}