<!DOCTYPE html>
<html>
<head>
    <meta content="text/html; charset=utf-8" http-equiv="content-type">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0,viewport-fit=cover">
    <title>
        JS Bridge
    </title>

    <style>
        body{
            padding: 0;
            margin: 0;
        }
        .button_container{
            padding: 12px 24px;
        }
        input[type=button] {
            width: 100%;
            display: block;
     