how to add some space in uiwebview [closed]

Now I have an uiwebview ,but I need some space right and left of the text.and I just write code programmatically,don't use IB.

m_webView = [[UIWebView alloc] initWithFrame:CGRectMake(11, 95, 298, 350)];

    NSString * path = [[NSBundle mainBundle] bundlePath];

    NSURL * baseURL = [NSURL fileURLWithPath:path];



    NSString * htmlString = [NSString stringWithFormat:defString, NSLocalizedString(@"kTerms_and_Legal_content_text", nil)];



    [m_webView loadHTMLString:htmlString baseURL:baseURL];