* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: white;
    color: black;
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

header {
    padding: 50px 20px;
    text-align: center;
    border-bottom: 1px solid black;
}

header h1 {
    margin: 0;
    font-size: 40px;
}

header p {
    margin-top: 10px;
}

main {
    width: 90%;
    max-width: 800px;
    margin: auto;
}

section {
    padding: 50px 0;
    border-bottom: 1px solid #ccc;
}

section h2 {
    margin-top: 0;
    font-size: 28px;
}

section h3 {
    margin-top: 30px;
    margin-bottom: 5px;
}

#about img {
    display: block;
    width: 100%;
    max-width: 600px;
    margin: 20px 0;
    border: 1px solid black;
}

footer {
    text-align: center;
    padding: 30px;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 32px;
    }

    section {
        padding: 35px 0;
    }
}