'Move a div in HTML

I am a beginner of HTML and i want to know how to move a div to the right of another div here is the code i currently have:

.tile {
  background: rgb(80, 80, 80);
  width: 300px;
  height: 300px;
  border-radius: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-right: auto;
}

.tile img {
  width: 50px;
}

a {
  color: #fff;
  text-decoration: none;
  padding: 50% 0;
}
<a href="https://classroom.google.com/u/0/h" target="blank_">
        <div class="tile">
            <img src="icons/classes.png" alt="Classroom Image">
      <p>Google Classroom</p>
    </div></a><br>
  <a href="https://wakeid2.wcpss.net/ui/applications" target="blank_">
        <div class="tile">
            <img src="icons/portal.png" alt="WakeID Portal Image">
      <p>WakeID Portal</p>
    </div></a><br>


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