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

.container {
    max-width: 960px;
    margin: auto;
    overflow: hidden;
    padding: 0 2rem;
}

header {
    background: #333;
    color: #fff;
    padding-top: 20px;
    min-height: 70px;
    border-bottom: #0779e4 3px solid;
}

header nav {
    float: left;
}

header ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

header li {
    display: inline;
}

header a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
    padding: 15px;
}

header a:hover {
    color: #ccc;
}

header .active {
    border-bottom: #0779e4 2px solid;
    color: #0779e4;
}

main {
    padding: 2rem 0;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 1rem;
}

p {
    line-height: 1.6;
    text-align: center;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
}