Exercise:

Use a jQuery method to slide down the <div> element.
The duration of the effect should be 3000 milliseconds.

Syntax hint: $("element").method(speed);

<!DOCTYPE html>
<html>
<head>
<script src="../../ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("div").slideDown(3000);
});
</script>
</head>
<body>

<div style="width:80px;height:80px;display:none;background-color:red;"></div>

</body>
</html>