.ad-container {
    display: flex;
    justify-content: center;
}

.ad-placeholder {
    background-color: #ffffff;
    color: #888; 
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    border: 1px solid #dddddd;
    border-radius: 10px; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
    font-size: 20px;
    user-select: none;
    font-family: Arial, Helvetica, "Nimbus Sans L", sans-serif;
}