* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #007bff;
    color: white;
    padding: 15px 20px;
}

header .logo {
    font-size: 24px;
    font-weight: bold;
}

header .hamburger {
    font-size: 28px;
    cursor: pointer;
}

.side-menu {
    position: fixed;
    top: 0;
    left: -250px;
    width: 250px;
    height: 100%;
    background-color: #333;
    color: white;
    transition: 0.3s;
    padding-top: 60px;
}

.side-menu ul {
    list-style: none;
}

.side-menu ul li {
    padding: 15px 20px;
}

.side-menu ul li a {
    color: white;
    text-decoration: none;
    display: block;
}

.side-menu ul li a:hover {
    background-color: #575757;
}

.side-menu.active {
    left: 0;
}

main {
    flex: 1;
    padding: 20px;
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #0056b3;
}