/* Reset mặc định */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f4ecec;
    color: #000000;
}

/* Navigation Bar */
.navbar {
    background-color: #111;
    overflow: hidden;
    color: white;
    padding: 10px 20px;
}

.navbar a {
    float: right;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
}

.navbar a:hover {
    background-color: #575757;
}

.navbar h1 {
    float: left;
}