title: change background color of half circle in svg
body: <p>i want to create First and third quarter moon on this svg code</p>
  
  <pre><code>&lt;svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 680.336 380.336"&gt;
      &lt;g stroke="#000"&gt;
        &lt;circle cx="30" cy="30" r="27" style="fill:#FFF;stroke-width:4"/&gt;  
   &lt;/g&gt;
  &lt;/svg&gt;
  </code></pre>
  
  <p>like this</p>
  
  <p>First quarter moon</p>
  
  <p><a href="https://i.stack.imgur.com/fLIb2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fLIb2.png" alt="enter image description here"></a></p>
  
  <p>Third quarter moon</p>
  
  <p><a href="https://i.stack.imgur.com/I2y7w.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I2y7w.png" alt="enter image description here"></a></p>
  
  <p>here moon border is light but i want to like strong </p>