<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
p{
width: 0;
height: 0;
border: 50px solid transparent;
border-left-color: red;
}
div{
width: 50px;
height: 50px;
border: 5px solid transparent;
border-color: red yellow transparent transparent;
transform: rotate(45deg);
}
</style>
</head>
<body>
<p></p>
<div></div>
</body>
</html>
