<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Height Checker</title>
<meta http-equiv="Content-Type" content="text/html"/>
<style>
* {
box-sizing: border-box;
}
body {
font-family: Tahoma, Geneva, Verdana, sans-serif;
}
.container {
width: 30%;
height: auto;
margin: 0 auto;
padding: 10px 0px;
border: 4px solid #1a75ff;
border-radius: 15px;
}
label {
margin: 10px;
}
input[type="text"] {
margin: 10px;
}
input[type="button"] {
margin: 10px;
padding: 5px 10px;
color: #fff;
background-color: #ff3333;
border: none;
cursor: pointer;
}
input[type="submit"]:hover {
background-color: #ff4d4d;
}
</style>
</head>
<body>
<h1 style="text-align: center;">Height Checker</h1>
<div class="container">
<label for="checker">Enter your height</label><br>
<input type="text" id="checker" name="checker"/><br>
<input type="button" value="Submit" onclick="check_number()">
</div>
<script>
var upper = 200;
var lower = 130;
function check_number(){
var num_text = document.getElementById("checker").value;
if(num_text > upper) {
alert("Your are too tall for this screen");
} else if(num_text < lower) {
alert("Your are too short for this screen");
}
}
</script>
</body>
</html>