<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>calculator using Materialize</title>

    <!--Import Google Icon Font-->
    <link href="http://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
    <!--css reset-->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/7.0.0/normalize.min.css">
    <!--Import Materialzie-->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.98.2/css/materialize.min.c