<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<link rel="stylesheet" href="">
<style>
button{
height:80px;
width:60%;
font-family:'Times New Roman', Times, serif;
font-size:30px;
border-radius: 40px;
border-top-left-radius: 5px;
margin-top:30%;
margin-left: 25%;
background-color:skyblue;
}
</style>
</head>
<body>
<button>
Click me
</button>
<script>
let btn = document.querySelector('button');
btn.addEventListener('click',InputMsg);
function InputMsg(){
let name = prompt('Enter Your Name');
btn.textContent = 'Your Name: ' + name;
}
</script>
</body>
</html>