In Madserve SDK the ad is displayed within the webview so the ad is content inside Webview and even centering webview content will be always displayed as it is Loaded(for large screen devices at Left corner).
So I have used some CSS tricks to position the ad at center, where we add code for Image Banner in Madserve I added Following CSS code in HTML banner code to make it display always at center,
.className {
max-width: 100%;
max-height: 100%;
bottom: 0;
left: 0;
margin: auto;
overflow: auto;
position: fixed;
right: 0;
top: 0;
}
This will position the ad at center, This Fixed my issue for now,
I'll look in the SDK where webview is Created and try to display whatever content we get at the center .