Fixing the mobile viewport

If you resize the dashboard to a mobile visualization (treated as an extra-small viewport in Bootstrap,) you should see some problems with the elements that are not appearing correctly. As shown in the next screenshot, note that the search appears and the card with the round chart is completely unaligned.

In this visualization mode, we are using the viewport of iPhone 6 in portrait orientation in the Chrome developer inspector:

Regarding the search bar, it will be better if this bar appears just when required, for example, when clicking on a button. So, next to the refresh button, let's create another icon to toggle the search bar.

The HTML for this section must be like the following code:

<div class="col-sm-3 top-left-menu">
  <div class="navbar-header">
    <a class="navbar-brand" href="dashboard.html">
      <h1>dashboard</h1>
    </a>

    <button type="button" class...