css pointer
by Ali Khaled
HTML
<div class="step1"></div>
<div class="step2"></div>
<div class="step3"></div>
<div class="step4"></div>
CSS
.step4 {
width: 0;
height: 0;
border-style: solid;
border-width: 10px;
background-color: transparent;
border-top-color: transparent;
border-left-color: transparent;
border-bottom-color: #080;
border-right-color: transparent;
}