.fixed-select-box {
    max-width: 600px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(38,147, 255, 0.1); /* Daha transparan yap */
    padding: 20px;
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.4); /* Hafif gölge ekleyerek belirginleştir */
    backdrop-filter: blur(5px); /* Arkaplanı hafif bulanık yap */
}