<!DOCTYPE html>
<html>
<head>
<title>Mortgage Calculator</title>
<style>
#parameters {
margin-top: 2em;
display: grid;
grid-template-columns: 10em min-content;
column-gap: 1em;
row-gap: 0.5em;
}
#parameters div {
text-align: right;
}
#parameters input {
width: 12em;
text-align: right;
}
#results {
margin-top: 2em;
}
#results-table {
border: 1px solid;
border-collapse: collapse;
}
#results-table th {
padding-top: 0.5em;
padding-bottom: 0.5em;
}
#results-table th, td {
text-align: center;
padding-left: 1em;
padding-right: 1em;
}
#results-table tr:nth-child(even){
background-color: #f2f2f2;
}
#results-table tr:hover {background-color: #ddd;}
</style>
</head>
<body>
<h1>Mortgage Calculator</h1>
<div id="parameters">
<div>Principal</div>
<div><input id="principal" type="number" value="100000" onchange="update()"></div>
<div>Annual Interest (%)</div>
<div><input id="interest" type="number" value="5.0" onchange="update()"></div>
<div>Installments</div>
<div><input id="installments" type="number" value="300" onchange="update()"></div>
</div>
<div id="results">
<table id="results-table">
<tr>
<th>Time</th>
<th>Outstanding Debt</th>
<th>Monthly Installment</th>
<th>Interest Paid</th>
<th>Amount Amortised</th>
</tr>
</table>
</div>
<script type="text/javascript" src="mortgage.js"></script>
</body>
</html>