body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
}

.container {
    width: 60%;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 8px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
}

/* MENU */
.menu {
    list-style: none;
    margin: 0;
    padding: 0;
    background: #333;
    overflow: hidden;
}

.menu li {
    float: left;
}

.menu li a {
    display: block;
    color: white;
    padding: 12px 16px;
    text-decoration: none;
}

.menu li a:hover {
    background: #555;
}

.menu li a.active {
    background: #777;
}

/* FORM */
input, select {
    width: 100%;
    padding: 8px;
    margin: 6px 0;
    box-sizing: border-box;
}

button {
    padding: 10px;
    background: #333;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #555;
}