.circle { background-color:#fff; border:1px solid red; height:100px; border-radius:50%; -moz-border-radius:50%; -webkit-border-radius:50%; width:100px; } <div class="circle"></div>
#div2{ width: 150px; height: 150px; border: 3px solid #05ffb0; border-radius: 50%; padding: 20px; text-align: center; }