JSFiddle - React, Tailwind, and code Playground

HTML

<div class="step1">
    <p><button>Test</button></p>
    <p><button>Test</button></p>
    <p><button>Test</button></p>
    <p><button>Test</button></p>
</div>

<div class="step2">
    <p><button>Test</button></p>
    <p><button>Test</button></p>
    <p><button>Test</button></p>
    <p><button>Test</button></p>
</div>

JavaScript

jQuery("button").on('click', function ()
{
    $(this).parent().nextAll('p').find('button').prop("disabled", true);
});