body, h1, h2, h3, p, ul, li {
    margin: 0;
    padding: 0;
}

/* Body styles */
body {
    font-family: Arial, sans-serif;
    background-color: #000; /* Bold background color */
    color: #fff; /* White text color */
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Header styles */
header {
    background-color: #ff0000; /* Vibrant red header background color */
    color: #fff;
    padding: 20px;
    text-align: center;
}

/* Navigation menu styles */
nav ul {
    list-style: none;
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

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

/* Section heading styles */
h1, h2, h3 {
    color: #ff0000; /* Red heading text color */
    margin-bottom: 20px;
}

/* Section styles */
section {
    padding: 20px;
    background-color: #fff; /* White section background color */
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* Link styles */
a {
    color: #007bff; /* Blue link color */
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Footer styles */
footer {
    background-color: #000; /* Black footer background color */
    color: #fff;
    text-align: center;
    padding: 10px;
}

/* Media queries for responsive design */
@media screen and (max-width: 768px) {
    header {
        padding: 10px;
    }
}