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

header {
    background-color: #73ba25;
    color: white;
    text-align: center;
    padding: 1em;
}

.logo {
    max-width: 200px;
}

nav ul {
    list-style: none;
    padding: 0;
    background-color: #333;
    overflow: hidden;
}

nav li {
    float: left;
}

nav a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav a:hover {
    background-color: #111;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
    background: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.screenshot {
    max-width: 100%;
    height: auto;
    margin: 10px 0;
    display: block;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
}