.fullscreen-banner {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.banner-content {
    width: 30%;
    height: 30%;
    background-color: white;
    position: relative;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: red;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    width: 40px;
    height: 40px;
}
.close-btn::before {
    content: '✖';
    font-size: 20px;
}
.banner-content h4 {
    color: #000;
    font-size: 26px;
    margin: 0;
    font-weight: 400;
}
@media (max-width:568px) {
    .banner-content {
        width: 90%;
        height: 50%;
    }
}