.float-sticky-ad-container {
    position: fixed; 
    bottom: 0; 
    left: 50%; 
    transform: translateX(-50%);
    background: rgba(128, 128, 128, .85); 
    padding: 5px; 
    z-index: 99999;
}

.float-sticky-ad .ad {
    margin: 0;
    padding: 0;
}

.float-sticky-ad-close-button:before { 
    content:"\00d7"; 
}

.float-sticky-ad-close-button {
    position: absolute;
    top: -20px;
    right: 0;
    background: rgba(128, 128, 128, .85);
    font-family: sans-serif;
    font-size: 20px;
    line-height: 20px;
    height: 20px;
    width: 20px;
    padding: 0;
    outline: none;
    border: none;
    cursor: pointer;
}