header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #4A4FA3;
    padding: 10px 20px;
    z-index: 1000;
    display: flex;
    justify-content: center;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 800px;
    padding: 0 10px;
}

.logo {
    max-width: 120px;
    height: auto;
    cursor: pointer;
    filter: brightness(1.2);
}