title: in my layouting with div tag sth is wrong
body: <p>hi i used div tag to layout my web page and i have a problem that there is about 2 more pixels free space which i marked it on 
  <a href="https://i.stack.imgur.com/TpIdm.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TpIdm.jpg" alt="enter image description here"></a></p>
  
  <p>and also i used these codes for progrraming it:</p>
  
  <p><strong>CSS</strong>:</p>
  
  <pre><code>.rightdiv {
  height: 1200px;
  width: 25%;
  border: 1px solid;
  float: right;}
  
  
  .centerdiv {
  height: 1200px;
  width: 49.3%;
  border: 1px solid;
  float: left;}
  </code></pre>
  
  <p>And also i have to explain that i used 49.3% in right-div because if i use more percent it will go to next line.</p>