<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <title>FIZZBUZZ GAME</title>
  <link href="https://fonts.googleapis.com/css?family=Oswald|Roboto+Condensed&display=swap" rel="stylesheet">
  <link href="https://fonts.googleapis.com/css?family=Ubuntu&display=swap" rel="stylesheet">
</head>

<body>

<div class="wrapper">
  <h1 class="title">FIZZBUZZ GAME</h1>
  <div class="text">
    <p class="text_inner">黄色いリボンに表示されている数字の次の数字を、以下の4つのボタンから選んで押してください。正解の場合、黄色いリボンに次の数字が表示されます。尚、3の倍数ではFIZZ、5の倍数ではBUZZ、3と5の倍数ではFIZZBUZZを選ぶものとします。</p>
  </div>
  <div class="inner" id="inner">
    <p class="now" id="now">1</p>
    <ul class="button_wrap">
      <li><input id="button1" class="button" name="button" type="button" value="2"></li>
      <li><input id="button2" class="button" name="button" type="button" value="FIZZ"></li>
      <li><input id="button3" class="button" name="button" type="button" value="BUZZ"></li>
      <li><input id="button4" class="button" name="button" type="button" value="FIZZBUZZ"></li>
    </ul>
  </div>
</div>

<div class="retry_button_wrapper">
  <button id="retry_button">Retry</button>
</div>

</body>

</html>
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sub, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, aside, section, article, figure {
  background: transparent;
  border: 0;
  margin: 0;
  padding: 0;
  vertical-align: baseline;
}

button, input{
  background-color: transparent;
  border: none;
  cursor: pointer;
  outline: none;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  display: block;
}

@keyframes gameoverEffect{
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(0%);
  }
}

html{
  font-size: 62.5%;
  letter-spacing: 0.1em;
  color: #222;
}

body{
  font-family: 'Oswald', sans-serif;
  background-color: #bb551d;
  background-image: url("data:image/svg+xml,%3Csvg width='42' height='44' viewBox='0 0 42 44' xmlns='http://www.w3.org/2000/svg'%3E%3Cg id='Page-1' fill='none' fill-rule='evenodd'%3E%3Cg id='brick-wall' fill='%235e2405' fill-opacity='0.4'%3E%3Cpath d='M0 0h42v44H0V0zm1 1h40v20H1V1zM0 23h20v20H0V23zm22 0h20v20H22V23z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

input{
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border: none;
  outline: none;
  background: transparent;
}

.wrapper{
  padding-bottom: 20px;
  max-width: 500px;
  width: 100%;
  margin: 10px auto 0;
  background: #f1f1f1;
  box-shadow: 6px 7px 9px -6px rgba(102,41,10,1);
  box-sizing: border-box;
}

.inner{
  max-width: 430px;
  width: 90%;
  margin: 0 auto;
  overflow: hidden;
}

#inner.gameover{
  position: relative;
}

#inner.gameover:after{
  content: 'GAME OVER';
  background: repeating-linear-gradient(90deg, #5a5a5a 0px, #5a5a5a 5px, #333333 5px, #333333 10px);
  width: 100%;
  height: 100%;
  color: #eee;
  font-family: 'Ubuntu', sans-serif;
  font-size: 40px;
  font-weight: bold;
  text-align: center;
  position: absolute;
  top: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all .3s;
  transform: translateY(0);
  animation-name: gameoverEffect;
  animation-duration: 0.5s;
  animation-timing-function: linear;
  z-index: 2;
}

.title{
  font-size: 40px;
  line-height: 1.3;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  font-weight: bold;
  color: #ec2020;
  text-shadow: 0px 4px 2px rgba(0, 0, 0, 0.32), 0px 1px 0px #d62222, 0px 2px 0px #da1e1e, 0px 3px 0px #b41919;
}

.text{
  width: 90%;
  margin: 10px auto 0;
}

.text_inner{
  font-size: 12px;
  font-family: "Yu Gothic Medium", "游ゴシック Medium", "YuGothic", "游ゴシック体", "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", "メイリオ", 
  "Meiryo", sans-serif;
  color: #333;
  text-align: left;
  line-height: 1.3;
  padding: 0 10px 10px;
  box-sizing: border-box;
}

.now{
  width: 100%;
  height: 40px;
  line-height: 40px;
  color: #f1f1f1;
  font-size: 24px;
  font-weight: bold;
  font-family: 'Oswald', sans-serif;
  text-align: center;
  background: #ffbd24;
  padding: 0 30px;
  margin: 10px auto 0;
  box-sizing: border-box;
  display: inline-block;
  position: relative;
}

.now:before, .now:after{
  position: absolute;
  content: '';
  width: 0px;
  height: 0px;
  z-index: 1;
}

.now:before{
  top: 0;
  left: 0;
  border-width: 20px 0px 20px 15px;
  border-color: transparent transparent transparent #f1f1f1;
  border-style: solid;
}

.now:after{
  top: 0;
  right: 0;
  border-width: 20px 15px 20px 0px;
  border-color: transparent #f1f1f1 transparent transparent;
  border-style: solid;
}

.button_wrap{
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  list-style: none;
  font-size: 14px;
  padding-left: 0;
  margin-top: 10px;
  width: 210px;
  margin: 10px auto 0;
}

.button_wrap li{
  margin: 10px 10px 0 0;
  color: #fff;
  max-width: 100px;
  width: 100%;
}

.button_wrap li:nth-of-type(2n){
  margin-right: 0;
}

.button_wrap li input{
  font-size: 18px;
  font-weight: bold;
  font-family: 'Oswald', sans-serif;
  width: 100%;
  padding: 8px 10px;
  box-sizing: border-box;
  color: #125c11;
  background: #2eae2c;
  border-radius: 3px;
  border-bottom: solid 4px #279625;
  box-shadow: 0px 2px 2px #43e7514a;
  text-shadow: 1px 1px 1px rgba(185, 248, 103, 0.5);
  transition: all .3s;
  cursor: pointer;
}

.button_wrap li input:active{
  transform: translateY(4px);
  border-bottom: none;
  box-shadow: 0px 0px 1px rgba(0, 0, 0, 0.2);
}

.retry_button_wrapper{
  max-width: 100px;
  width: 100%;
  margin: 0 auto 20px;
}

#retry_button{
  font-size: 18px;
  font-weight: bold;
  font-family: 'Oswald', sans-serif;
  width: 100%;
  padding: 8px 10px;
  box-sizing: border-box;
  color: #125c11;
  background: #2eae2c;
  border-radius: 3px;
  border-bottom: solid 4px #279625;
  box-shadow: 0px 2px 2px #43e7514a;
  text-shadow: 1px 1px 1px rgba(185, 248, 103, 0.5);
  transition: all .3s;
  cursor: pointer;
  margin: 10px auto 0;
  display: none;
}

#retry_button.isShow{
  display: block;
}
const $btn = document.querySelectorAll('.button'); //ボタン
const $btn1 = document.querySelector('#button1'); //ボタン1
const $now = document.querySelector('#now'); //現在のID
const $inner = document.querySelector('#inner'); //gameover付与
const $retry_button = document.querySelector('#retry_button'); //ボタン

$retry_button.addEventListener('click', function () {
  //location.reload();
  location.href = '';
});

for (let i in $btn) {
  const $current_btn = $btn[i];

  $current_btn.onclick = function (params) {
    const $self = this;
    let self_value = $self.value; //クリックしたボタンの値
    let now_value = parseInt($now.textContent) + 1; //次の数値

    if (!isNaN(self_value)) {
      self_value = parseInt(self_value);
    }

    //選択した答えの判定
    answer(self_value, now_value);
  };
}

//選択した答えを受け取って、判定する
function answer(self_val, ans_val) {
  let answer = fizz_buzz(ans_val);

  if (self_val === answer) {
    $now.textContent = ans_val;
    ans_val++;
    $btn1.value = ans_val;
  }
  else {
    $inner.classList.add('gameover');
    $retry_button.classList.add('isShow');
  }
}

//FIZZBUZZの判定結果を返す
function fizz_buzz(num) {
  if ((num % 3) === 0 && (num % 5) === 0) {
    return 'FIZZBUZZ';
  }
  else if ((num % 3) === 0) {
    return 'FIZZ';
  }
  else if ((num % 5) === 0) {
    return 'BUZZ';
  }
  else {
    return num;
  }
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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