body {
    font-family: 'Times New Roman', Times, serif;
    color: #111;
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: colorChange 20s infinite ease-in-out;
    transition: background-color 2s;
}

header, footer {
    padding: 20px;
}

main {
    max-width: 800px;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 15px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 3em;
    margin-bottom: 0.2em;
}

h2 {
    font-size: 2em; 
    margin-top: 0.5em;
}

p {
    font-size: 1.3em;
    line-height: 1.5em;
}

a {
    color: darkblue;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

details {
    margin-top: 1.5em;
    font-size: 1.1em;
    cursor: pointer;
}

summary {
    font-weight: bold;
}

footer {
    margin-top: auto;
    font-style: italic;
}




/* BACKGROUND COLOR ANIMATION */
@keyframes colorChange {
    0%   { background-color: #ff4b4b; }
    25%  { background-color: #ffa64b; }
    50%  { background-color: #fff04b; }
    75%  { background-color: #4bff7a; }
    100% { background-color: #ff4b4b; }
}