/* header.css */
.header {
    position: sticky;
    top: 0;
    background-color: #34495e;
    padding: 15px;
    color: #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 200;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.header h1 {
    margin: 0;
    font-size: 1.5em;
}