JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div class="newsInner"> 
        <!--tabs start-->
        <div id="tabs">
          <ul class="tab">
            <li><span>2014</span></li>
            <li><span>2015</span></li>
            <li><span>2016</span></li>
            <li class="active"><span>2017</span></li>
          </ul>
          <div class="tabContent">
            <div class="tabContentInner">
              <p>2014ダミー</p>
            </div>
          </div>
          <div class="tabContent">
            <div class="tabContentInner">
              <p>2015ダミー</p>
            </div>
          </div>
          <div class="tabContent">
            <div class="tabContentInner">
              <p>2016ダミー</p>
            </div>
          </div>
          <div class="tabContent active">
            <div class="tabContentInner">
              <div class="monthly">
                <ul class="tab2">
                  <li><span>4月</span></li>
                  <li><span>5月</span></li>
                  <li><span>6月</span></li>
                  <li><span>7月</span></li>
                  <li><span>8月</span></li>
                  <li><span>9月</span></li>
                  <li><span>10月</span></li>
                  <li class="active"><span>11月</span></li>
                  <li><span>12月</span></li>
                  <li><span>1月</span></li>
                  <li><span>2月</span></li>
                  <li><span>3月</span></li>
                </ul>
                <div class="tabContent2">
                  <p>1ダミー</p>
                </div>
                <div class="tabContent2">
                  <p>2ダミー</p>
                </div>
                <div class="tabContent2 active">
                  <p>3ダミー</p>
                </div>
                <div class="tabContent2">
                  <p>4ダミー</p>
                </div>
                <div class="tabContent2">
                  <p>5ダミー</p>
                </div>
     ...

CSS

/*-----------------------------------
reset.css
-----------------------------------*/
* {
	margin: 0;
	padding: 0;
	font-size: 100%;
	vertical-align: baseline;
	-webkit-appearance: none;
}
article, aside, details, figcaption, figure, header, footer, hgroup, menu, nav, section {
	display: block;
}
ol, ul {
	list-style: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}
/*-----------------------------------
base
-----------------------------------*/


html {
	font-size: 10px;
}
body {
	font-family: 'Noto Sans Japanese', 'ヒラギノ角ゴ Pro W3', 'Hiragino Kaku Gothic Pro', 'ＭＳ Ｐゴシック', 'MS PGothic', Arial, Helvetica, Verdana, sans-serif;
	font-size: 1.4rem;
	font-weight: 300;
	color: #333;
	-webkit-font-smoothing: subpixel-antialiased;
	font-smoothing: subpixel-antialiased;
	-webkit-text-size-adjust: 100%;
}
/* font-size
10px = 1.0rem
11px = 1.1rem
12px = 1.2rem
...*/
a {
	color: #333;
	text-decoration: none;
	/*transition: .2s;*/
	/*-ms-transform: rotate(0.05deg);*/
}
a:focus {
	outline: none;
}
a:hover {
	text-decoration: underline;
}
a:active,
a:focus {
	text-decoration: none;
}
a.linkcolor {
	color: #b33557;
	text-decoration: none;
}
a.linkcolor:hover {
	text-decoration: underline;
}
h1, h2, h3, h4, h5, h6, strong {
	font-weight: bold;
}
hr {
	height: 0;
	margin: 0;
	padding: 0;
	border: 0;
}
img {
	vertical-align: bottom;
}

/*h2, h3, h4, p {
	-ms-transform: rotate(0.05deg);
}*/
/*-----------------------------------
clear
-----------------------------------*/
.clear {
	clear: both;
}
.clearfix::after {
	content: " ";
	display: block;
	clear: both;
}


/*-----------------------------------
여기부터 탭css
-----------------------------------*/
/* tabs */
.tab li,
.tab2 li {
	float: left;
}
.tab li {
	width: 25%;
}
.tab2 li {
	width: 80px;
	text-align: center;
}
.tab li span {
	background: #fff;
	cursor: pointer;
	display: block;
	font-size: 1.6rem;
	font-weight: 500;
	padding: 15px;
	border: 1px solid #c1c1c1;
}
.tab li span::before {
	font-family:...

JavaScript

// tab menu
	$(".tab li").click(function () {
		var num = $(".tab li").index(this);
		$(".tabContent").removeClass('active');
		$(".tabContent").eq(num).addClass('active');
		$(".tab li").removeClass('active');
		$(this).addClass('active')
	});

	$(".tab2 li").click(function () {
		var num = $(".tab2 li").index(this);
		$(".tabContent2").removeClass('active');
		$(".tabContent2").eq(num).addClass('active');
		$(".tab2 li").removeClass('active');
		$(this).addClass('active')
	});