title: Adjust the input size in Bootstrap 4
body: <p>It seems that the width of <code>select</code> element and <code>input</code> element are equal. How can I make it so that <code>input</code> element would take much more space and <code>select</code> would take less space?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/&gt;
  &lt;div class="input-group mb-3"&gt;
    &lt;div class="input-group-prepend"&gt;
      &lt;button class="btn btn-outline-secondary" type="button"&gt;Button&lt;/button&gt;
    &lt;/div&gt;
    &lt;select class="custom-select" id="inputGroupSelect03"&gt;
      &lt;option selected&gt;Choose...&lt;/option&gt;
      &lt;option value="1"&gt;One&lt;/option&gt;
    &lt;/select&gt;
    &lt;input class="form-control"&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>