body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to right, #007acc, #005a99);
    text-align: center;
    color: white;
    width: 100%;
}
h1 {
    text-align: center;
    padding: 20px;
    font-size: 2.5em;
    background: rgba(0, 0, 0, 0.5);
}
.container {
    width: 80%;
    margin: 40px auto;
    padding: 25px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    color: black;
}
.question {
    display: none;
    margin-bottom: 20px;
    padding: 15px;
    border: 2px solid #fff;
    border-radius: 10px;
}
.question.active {
    display: block;
}
.feedback {
    margin-top: 10px;
    font-weight: bold;
}
header {
    background: rgba(0, 0, 0, 0.6);
    padding: 30px;
    font-size: 28px;
    font-weight: bold;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
}
nav {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}
nav a {
    color: white;
    text-decoration: none;
    font-size: 18px;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background 0.3s;
}
nav a:hover {
    background: rgba(255, 255, 255, 0.3);
}
.container {
    width: 80%;
    margin: 40px auto;
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    color: black;
}
footer {
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 15px;
    position: fixed;
    bottom: 0;
    width: 100%;
    margin-top: 40px;
    font-size: 14px;
}