styles.css

.train-helpbox {
	border-style:solid;
    margin:15px;
    float:left; 
	border-right-width:0;
    border-color:transparent transparent transparent #ddd;padding:5px;
    height: 0;
    width: 0;
    border-width:45px;}
.train-helpbox::before {  content: '\f02d'; font-family: 'fontawesome';}