title: Why is the border a little less than what i set it to be?
body: <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.div1 {
    width: 200px;
    height: 100px;
    padding: 25px;
    border: 10px solid blue;
    box-sizing: border-box;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div&gt;
    &lt;div class="div1"&gt;
    &lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  <p><a href="https://i.stack.imgur.com/B1TDz.png" rel="nofollow noreferrer">This is what i got in the browser</a></p>
  <p>can someone explain why the border is 9.998px instead of 10px?
  Also when i added up all the border and padding, it was not exactly to 200px.
  Does this have anything do with the browser's default styles?</p>