body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #0D1B2A;
    color: white;
}
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}
.header-left {
    font-size: 24px;
    font-weight: bold;
    color: #00AEEF;
}
.header-right img {
    height: 40px;
}
nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    background-color: #0D1B2A;
    padding: 10px 0;
}
nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}
.btn {
    border: 1px solid #00AEEF;
    background: none;
    color: #00AEEF;
    padding: 5px 15px;
    cursor: pointer;
    font-weight: bold;
}
.banner {
    text-align: center;
    padding: 50px 20px;
}
section {
    padding: 40px 20px;
}