If Logged In

Hello,

Im trying to set up a user pannel which will have links to diffrent pages on the site i found this php code

<?php
if ( is_user_logged_in() ) {
    echo 'Welcome Registerd User';
} else {
    echo 'Welcome, visitor!';
};
?>

and i want to use this for when they are logged in

<ul>
<li>User Pannel</li>
<li><a href="https://doctorwhohd.com/profile/" target="_self">Profile</a></li>
<li><a href="https://doctorwhohd.com/edit-profile" target="_self">Edit Profile</a></li>
<li><a href="https://doctorwhohd.com/activity/" target="_self">Recent Activity</a></li>
<li><a href="https://doctorwhohd.com/friends/" target="_self">My Freinds</a></li> <li><a href="https://doctorwhohd.com/request/" target="_self">Friend Requests</a></li>
<li><a href="https://doctorwhohd.com/directory/" target="_self">User Directory</a></li>
<li><a href="https://doctorwhohd.com/logout/" target="_self">Log Out</a></li>
</ul>
</div>

i will use this where it says welcome registered user.

It works find but the CSS style goes and im just left with text how do i keep the css style in the php style would be great if someone could help me
Thanks