<body>
<p id="hiddenP" hidden="hidden">This is paragraph element.</p>
<button id="myButton">Click Me</button>
<button onclick="location.reload()">Reset</button>
</body>
$(document).ready(function()
{
$("#myButton").click(function()
{
$("p:hidden").removeAttr("hidden").css({'background-color':'Orange','font-size':'20px'});
});
});