* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

nav {
    background-color: #3b4d61;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}

.logo {
    font-size: 30px;
    font-weight: bold;
    color: #00c1d4;
}

ul {
    display: flex;
    list-style-type: none;
}

ul > li {
    margin: 0 20px;
}

ul > li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    transition: color 0.3s;
}

ul > li a:hover {
    color: #00c1d4;
}

.container {
    max-width: 90vw;
    margin: 20px auto;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.leftb, .rightb {
    flex: 1;
    min-width: 300px;
}

h1, h2 {
    margin: 20px 0;
    color: #3b4d61;
}

p {
    font-size: 1.1rem;
    color: #555;
}

.btn {
    margin-top: 20px;
    background-color: #00c1d4;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #008ea1;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: #fff;
    border-radius: 10px;
}

table, th, td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: center;
}

table th {
    background-color: #3b4d61;
    color: #fff;
}

table tr:nth-child(even) {
    background-color: #f9f9f9;
}

table tr:hover {
    background-color: #f1f1f1;
}

.section {
    max-width: 90vw;
    margin: 50px auto;
    padding: 40px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.section h2 {
    color: #3b4d61;
}

.section p {
    font-size: 1.2rem;
    line-height: 1.5;
    color: #555;
}

textarea {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        align-items: center;
    }
}