Banner Ad Script in Header

HTML

<div id="header" class="left-header" itemscope="" itemtype="http://schema.org/WPHeader">
  <div class="container">
    <div class="clearfix"></div>
    <div class="headad">
      <script type="text/javascript">
        amzn_assoc_ad_type = "banner";
        amzn_assoc_marketplace = "amazon";
        amzn_assoc_region = "US";
        amzn_assoc_placement = "assoc_banner_placement_default";
        amzn_assoc_campaigns = "motorcycleatv";
        amzn_assoc_banner_type = "category";
        amzn_assoc_isresponsive = "true";
        amzn_assoc_banner_id = "1GTBWXZ6AWK39XVHDN82";
        amzn_assoc_tracking_id = "trabooabc-20";
        amzn_assoc_linkid = "368616acee2723172a2c3fcdc6599436";

      </script>
      <script src="//z-na.amazon-adsystem.com/widgets/q?ServiceVersion=20070822&Operation=GetScript&ID=OneJS&WS=1"></script>
    </div>
    <div id="titles" class="tranz2">
      <a class="logo" href="#">
        <img class="tranz" src="https://s1.postimg.org/5em02srosf/portal-logo2.jpg" alt="site logo">
      </a>
    </div>
    <!-- end #titles  -->
    <div class="clearfix"></div>
  </div>
  <!-- end .container  -->
</div>

CSS

.headad {
  float: right;
  position: absolute;
  top: 50%;
  right: 0;
  margin: -65px 0 0 0;
}

#header {
  background-color: #f7f7f7;
  border-color: #eeeeee;
  padding: 0 0;
  overflow: visible;
  margin: 0 0 0 0;
  position: relative;
  display: block;
  width: 100%;
  z-index: 100;
}

#header .container {
  overflow: visible;
}

.container,
.container_alt {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 0;
  overflow: hidden;
  position: relative;
}

.clearfix {
  display: block;
}

.clearfix:after {
  content: "\00A0";
  display: block;
  clear: both;
  visibility: hidden;
  line-height: 0;
  height: 0;
}

#titles {
  margin-top: 30px;
  margin-bottom: 30px;
  width: 355px;
  overflow: hidden;
  float: left;
  display: block;
  padding: 0 0 0 0;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 3;
}

.tranz2 {
  -webkit-transition: all .2s ease;
  -moz-transition: all .2s ease;
  transition: all .2s ease;
}