body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, rgb(87, 87, 255), rgb(255, 255, 255));
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px;
    box-sizing: border-box;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5em;
    color: #fff;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.box {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    backdrop-filter: blur(15px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.box h2 {
    font-size: 2em;
    color: #222;
    margin: 0;
    padding-bottom: 10px;
}

#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 20px;
    background-color: #4a5b6e;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

#backToTop:hover {
    opacity: 1;
}