<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Calculator</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <section>
    <div class="container">
      <div class="calculator">
        <div class="display">
          <div class="display-1">0</div>
          <div class="display-2">0</div>
          <div class="temp-result"></div>
        </div>
        <div class="all_button">
          <div 