Here goes the code:

```
 <style>
   .thumbnail
   {
   float:left;
   width:110px;
   height:90px;
   margin:5px;
  }
</style>
  <body>
  <img src="klematis_small.jpg" style="width:107px; height:140px">
  <img class="thumbnail" src="klematis_small.jpg" style="width:107px; height:150px">

```

The confusing is why the second img which is floated appering before the first img.If we place the first img to second img everything works as expected.