title: How to use margin top between input and span
body: <p>I am using vue and I wrote a simple code.<br></p>
  
  <pre><code>&lt;template&gt;
    &lt;div&gt;
      &lt;input /&gt;
      &lt;span class="span-text"&gt;Hi&lt;/span&gt;
    &lt;/div&gt;
  &lt;/template&gt;
  
  // index.css
  
  .span{
    margin-top: 3px;
  }
  </code></pre>
  
  <p>I want to put the space between input and span. <br>
  But this margin-top doesn't work. How can I solve this problem? Thank you so much for reading.</p>