Add Google Adsense to My Header

Try adding the display property to the css:

#adbox {
  height: 100px;
  width: 320px;
  border: 1px solid gray;
  margin: 20px auto;
  display: table;
  }

Thank you for the code. I modified it a bit so that it will adjust for mobile version. The ads are being cut when viewed in small devices. So I place 2 ads, one is 730×90 and the other one is 256×80. For big screens the 256×80 is hidden.
Here is my site
denricdenise.info

Here is the code

<!-- BEGIN Ad Box -->
<div id="adbox" style="float:right;padding-top:20px;">
	<!-- your 730x90 ads -->
</div>
<div id="adbox-small" style="display: none; text-align: center;">
	<!-- your 256x80 ads -->
</div>
<!-- END Ad Box -->

CSS

@media (max-width: 600px)
{
	#adbox {
		 display:none;
	}

	#adbox-small {
		display:inline !important;
	}
	#adbox-small img {
		display:block;margin:auto;
	}

	#header .pad {
		padding:1px !important;
	}
}