JSFiddle - React, Tailwind, and code Playground
HTML
<ul class="clearfix">
<li>
<div class="step-one circle">
<p>Step 1</p>
</div>
</li>
<li>
<div class="step-two circle">
<p>Step 2</p>
</div>
</li>
<li>
<div class="step-two circle">
<p>Step 3</p>
</div>
</li>
</ul>
<div class="stepinstallment">
<ul>
<li id="step-one">
<h2>Choose your document</h2>
<div class="step-content">
<label>
<input type="radio" id="option-1" name="options" value="1" />
<span>ID card and household registration</span>
</label>
</div>
</li>
<li id="step-two">
<h2>Choose your document</h2>
<div class="step-content">
<label>
<input type="radio" id="option-1" name="options" value="1" />
<span>ID card and household registration</span>
</label>
</div>
</li>
<li id="step-three">
<h2>Choose your document</h2>
<div class="step-content">
<label>
<input type="radio" id="option-1" name="options" value="1" />
<span>ID card and household registration</span>
</label>
</div>
</li>
</ul>
</div>
JavaScript
var sCircle = $('.steps ul li');
$('input[type=radio]').on('click', function(){
var liIndex=$(this).parents('li').index();
if(liIndex>0){
alert('error')
}
else{
$('ul.clearfix>li:eq('+liIndex+')').css('background-color','red')
}
});