* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
}

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

nav ul li {
    margin: 0 1rem;
}

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

section {
    padding: 2rem 0;
    text-align: center;
}

section#home {
    background: url('hero-image.jpg') no-repeat center center/cover;
    color: #fff;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro {
    background: rgba(0, 0, 0, 0.7);
    padding: 2rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.portfolio-item {
    margin: 2rem 0;
    padding: 1rem;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

form {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

form label {
    display: block;
    margin-bottom: 0.5rem;
}

form input, form textarea {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

form button {
    background: #333;
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 4px;
}

form button:hover {
    background: #555;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

.simulator-container {
    display: flex;
    justify-content: space-between;
    padding: 2rem;
}

.input-container, .output-container {
    width: 48%;
}

.button-container {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

button#button1 {
    background-color: green;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
}

button#button2 {
    background-color: red;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
}

textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: none;
}