<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Periodic Table Calculator</title>
</head>
<body>
    <div class="container">
        <h1>Periodic Table Calculator</h1>

        <!-- Periodic Table Card -->
        <div class="card">
            <table id="periodic-table"></table>
        </div>

        <!-- Table Details Card -->
        <div class="card" id=