body {
    font-family: sans-serif;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    background: #fafbfa;
}

.navbar {
    background: #eee;
    padding: 10px 0;
    margin-bottom: 25px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 1px 2px #ccc;
}
.navbar a {
    display: inline-block;
    margin: 0 18px;
    color: #004466;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: color 0.15s;
}
.navbar a:hover {
    color: #0077cc;
    text-decoration: underline;
}

input, select, button {
    padding: 5px;
    margin: 5px 0;
    font-size: 1em;
}
hr {
    margin: 30px 0 20px 0;
    border: none;
    border-top: 1px solid #ddd;
}
#myDiv3 {
    margin-top: 20px;
    line-height: 1.6;
}
a {
    text-decoration: none;
    color: #0066cc;
}
a:hover {
    text-decoration: underline;
}