<div id="example1">
 <h1> This is a header level 1 tag </h1>
  <p> This div tag was styled using the ID attribute. </p>
</div>
<br />
<div class="example2">
 <h1> This is a header level 1 tag </h1>
  <p> This div tag was styled using the ID attribute. </p>
</div>

#example1 {border: 5ps; border-color: red; border-style: solid;}
.example2 {border: 5ps; border-color: #09d080; border-style: double;}