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<!DOCTYPE html>
<html>
<head>
<title>Document Object Model:30 Days Of JavaScript</title>
<link href="https://fonts.googleapis.com/css?family=Aldrich|Roboto|Lato|Raleway
:300,400,500&display=swap" rel="stylesheet">
<style>
* {
box-sizing: border-box;
padding: 0;
margin: 0;
}
body {
text-align: center;
margin-top: 50px;
font-family: 'Lato', sans-serif;
}
h1 {
font-size: 36px;
margin: 50px auto;
background: #fbe324;
width: 650px;
padding: 15px;
color: #444;
font-weight: lighter;
}
input {
width: 250px;
height: 45px;
text-indent: 10px;
font-size: 18px;
}
input:focus {
border: 1px solid #fbe324;
outline: 1px solid #fbe324;
}
input::placeholder {
color: rgb(195, 190, 190);
}
button {
width: 150px;
height: 45px;
border: none;
background: #fbe324;
color: #444;
font-size: 18px;
font-family: 'Lato', sans-serif;
}
button:focus{
border: 1px solid #fbe324;
outline: 1px solid #fbe324;
}
p {
margin: 15px auto;
background: #fbe324;
width: 650px;
padding: 5px;
font-size: 28px;
font-family: 'Raleway', sans-serif;
}
span {
display: inline-block;
width: 80px;
height: 80px;
padding: 5px;
border-radius: 50%;
background: rgb(246, 192, 91);
line-height: 70px;
}
</style>
</head>
<body>
<h1>Body Mass Index Calculator</h1>
<input type="text" id="mass" placeholder="Mass in Kilogram" />
<input type="text" id="height" placeholder="Height in meters" />
<button>Calculate BMI</button>
<script>
const mass = document.querySelector('#mass')
const height = document.querySelector('#height')
const button = document.querySelector('button')
const bmiResult = document.createElement('p')
let bmi
button.addEventListener('click', () => {
bmi = mass.value / height.value ** 2
bmiResult.innerHTML = `<span>${bmi.toFixed(2)}</span>`
document.body.appendChild(bmiResult)
})
</script>
</body>
</html>