index.css

@keyframes backgroundAnimation {
    0% {
        background-position: 0% 50%;
    }

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

    100% {
        background-position: 0% 50%;
    }
}

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(-45deg, #750058, #3c009e, #3c009e, #750058);
    background-size: 100% 200%;
    animation: backgroundAnimation 10s ease infinite;
    color: #ffffff;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    justify-content: center;
    align-items: center;
}

.hidden-message {
    font-weight: bold;
    color: #ffcc00;
}

p {
    font-size: 1.1em;
    line-height: 1.6;
    text-align: justify;
}

.container {
    margin-top: 30px;
    max-width: 600px;
    background-color: #1c1c1c;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    text-align: center;
}

.input-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}

input {
    padding: 10px 3px;
    width: 90%;
    border: 2px solid #ff4081;
    border-radius: 5px;
    font-size: 1.3em;
    background-color: #2a2a2a;
    color: white;
    text-align: center;
}

input:focus {
    outline: none;
    border-color: #e60073;
    box-shadow: 0 0 10px rgba(255, 64, 129, 0.7);
}

button {
    padding: 12px 25px;
    background-color: #057e1f;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1.1em;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #08710d;
    box-shadow: 0 0 10px rgba(161, 134, 134, 0.8);
}