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    <h1><a href="index.html">WEB</a></h1>
    <h2 style="background-color: coral; color: powderblue;">JavaScript란 무엇인가?</h2>
    <p><span id="first" class="js">JavaScript</span> (/ˈdʒɑːvəˌskrɪpt/),often abbreviated as JS, is a high-level, interpreted programming language that conforms to the ECMAScript specification.
    <span class="js">JavaScript</span> has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions. Alongside HTML and CSS, <span class="js">JavaScript</span>
    is one of the core technologies of the World Wide Web.<span class="js">JavaScript</span> enables interactive web pages and is an essential part of web applications. The vast
    majority of websites use it, and major web browsers have a dedicated <span class="js">JavaScript</span> engine to execute it.</p>
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