Draw arrows with only CSS

HTML

<div class="body">Ciao</div>
<span class="right"></span>

CSS

span { margin-bottom:10px; display:block; } 


span.right {
    width:0; height:0; 
    border:90px solid transparent; 
    border-left-color:#000;
}

div.body {
   
    background: #8AC007;
    padding: 20px; 
    width: 200px;
    height: 150px;   
}