body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header h2 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 300;
}

nav {
    background: #444;
    color: #fff;
    padding: 0.7rem;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 0.5rem 1rem;
}

nav a:hover {
    background: #555;
}

main {
    width: 80%;
    margin: 2rem auto;
    overflow: hidden;
    padding: 0 2rem;
}

section {
    background: #fff;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

section h3 {
    color: #333;
    margin-top: 0;
}

ul {
    list-style: disc;
    padding-left: 20px;
}

ul.tasks {
    list-style: none;
    padding-left: 0;
}

ul.tasks li {
    background: #f9f9f9;
    border-left: 4px solid #007bff;
    padding: 0.8rem;
    margin-bottom: 0.5rem;
}

ul.tasks .date {
    font-weight: bold;
    color: #0056b3;
    display: block;
    margin-bottom: 0.3rem;
}

a {
    color: #007bff;
}

a:hover {
    color: #0056b3;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: #fff;
    margin-top: 2rem;
}