.inter-ad-container {
    position: fixed;
    width: 100%;
    height: 100%;
    min-height: 50px;
    top: 0;
    left: 0;
    text-align: center;
    vertical-align: middle;
    z-index: 2147483647;
    background-color: #ccc;
}

.inter-ad-container * {
    width: 100%;
    height: 100%;
}

.close-button {
    width: 36px;
    height: 36px;
    position: absolute;
    top: 0;
    right:0;
    background: url('images/close_button.png') no-repeat 0 0;
}

.close-button:hover {
    cursor: pointer;
}