I want to limit my external css to target only the modal popup element. How can i achieve this?
<!DOCTYPE html>
<html>
<head>
<link href="chrome-extension://nadbhohceamehfnnjjphbcefhddfbene/css/semantic.min.css" rel="stylesheet">
</head>
<body>
<div>
<img id="aartha_image" src="chrome-extension://nadbhohceamehfnnjjphbcefhddfbene/images/icon_48.png" />productname
<div>
<div class="ui fluid search selection dropdown" id="search-select">
<input type="hidden" name="gmailContacts">
<i class="dropdown icon"></i>
<div class="default text">Select Gmail Users</div>
<div class="menu" style="visibility: hidden" id="GmailContactList"></div>
</div>
<button class="ui button" id="searchUserButton"><i class="search icon"></i></button>
</div>
</div>
</body>
</html>