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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    text-align: center;
}

header h1 {
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

h3 {
    color: #ff0000;
}

nav {
    margin-top: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.3s;
    font-weight: bold;
}

nav a:hover {
    color: #e74c3c;
}

main {
    max-width: 950px;
    margin: 2rem auto;
    padding: 0 1rem;
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

article {
    background-color: white;
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-left: 5px solid #e74c3c;
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

article h2 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.6rem;
}

article p {
    margin-bottom: 0.8rem;
}

section {
    background-color: white;
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
    border-bottom: 2px solid #e74c3c;
    padding-bottom: 0.5rem;
    font-size: 1.8rem;
}

ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.7rem;
}

a {
    color: #e74c3c;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #c0392b;
    text-decoration: underline;
}

iframe {
    max-width: 100%;
    margin: 1rem 0;
    border-radius: 5px;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

footer a {
    color: #e74c3c;
}

footer a:hover {
    text-decoration: underline;
}