body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

.hero {
    text-align: center;
    background-color: #f4f4f4;
    padding: 50px 20px;
}

.features {
    display: flex;
    justify-content: space-around;
    padding: 20px;
}

.feature {
    text-align: center;
    width: 30%;
}

.testimonials {
    background-color: #f4f4f4;
    padding: 20px;
}

.testimonials blockquote {
    border-left: 5px solid #ccc;
    padding-left: 15px;
    margin: 10px 0;
}

.tutorial-link {
    text-align: center;
    padding: 20px;
}

footer {
    text-align: center;
    background-color: #333;
    color: #fff;
    padding: 10px 0;
}