#simpleInterestCalc {
width: 300px;
padding: 20px;
border: 1px solid #ccc;
border-radius: 5px;
}
#simpleInterestCalc input,
#simpleInterestCalc button {
width: 100%;
padding: 10px;
margin-top: 5px;
}
function calculateInterest() {
var principal = document.getElementById(‘principal’).value;
var rate = document.getElementById(‘rate’).value;
var time = document.getElementById(‘time’).value;

var interest = (principal * rate * time) / 100;
document.getElementById(‘output’).innerHTML = ‘Simple Interest: $’ + interest.toFixed(2);
}