Untitled

<!DOCTYPE html>
<html>

  <head>
    <link rel="stylesheet" href="style.css">
     <link rel="stylesheet" href="demo.css">
  </head>

  <body>
    <div class="arrow-up"></div>
    <div class="arrow-down"></div>
    <div class="arrow-left"></div>
    <div class="arrow-right"></div>
  </body>

</html>

// Code goes here

/* Styles go here */
.arrow-up {
	width: 0; 
	height: 0; 
	border-left: 5px solid transparent;
	border-right: 5px solid transparent;
	
	border-bottom: 5px solid black;
}


.arrow-down {
	width: 0; 
	height: 0; 
	border-left: 20px solid transparent;
	border-right: 20px solid transparent;
	
	border-top: 20px solid #f00;
}

.arrow-right {
	width: 0; 
	height: 0; 
	border-top: 60px solid transparent;
	border-bottom: 60px solid transparent;
	
	border-left: 60px solid green;
}

.arrow-left {
	width: 0; 
	height: 0; 
	border-top: 10px solid transparent;
	border-bottom: 10px solid transparent; 
	
	border-right:10px solid blue; 
}

div{
  margin-bottom:10px;
  
}