Hover effect on one producing css change in another element - css

Question

Here is the code:
<ul id="gn-menu" class="gn-menu-main">
<li class="gn-trigger">
<a class="gn-icon gn-icon-menu">
<div class="hamburger hamburger--arrow">
<div class="hamburger-box">
<div class="hamburger-inner"></div>
</div>
</div>
</a>
<nav class="gn-menu-wrapper gn-open-part">
<div class="gn-scroller">
<ul class="gn-menu">
<li><a class="gn-icon" id="calendar" href="http://remindbuddy.com/main.php">Calendar</a>
</li>
<li>
<a class="gn-icon self" href="http://remindbuddy.com/self.php">Add For Self</a>
</li>
<li><a class="gn-icon events" href="http://remindbuddy.com/events.php">Events</a></li>
<li><a class="gn-icon view" href="http://remindbuddy.com/contacts.php">View Contacts</a></li>
<li>
<a class="gn-icon add" id="toggle">Add Contact</a>
<ul id="panel" style="display:none">
<li><a href="http://remindbuddy.com/professional.php" <?php if($_SESSION['pro']==0){echo 'style="pointer-events: none;"';}?>>Professional</a></li>
<li>Personal</li>
</ul>
</li>
<li><a class="gn-icon profile" href="http://remindbuddy.com/profile.php">Profile</a></li>
</ul>
</div><!-- /gn-scroller -->
</nav>
</li>
<li class="pageTitle">Profile</li>
</ul>
<span class="left" id="calendarTool">Calendar</span>
What I want is that, for hover on li#calendar to change css property of span#calendarTool.
I have tried:
#calendar:hover #calendarTool,
#calendar:hover + #calendarTool,
#calendar:hover ~ #calendarTool
But nothing seems to work.How to get this done in the given scenario.
Thanxx in advance!!

Answer 1

#calendar is not a sibling nor a parent of #calendarTool so you will not be able to leverage css to handle this. This will require JS/Jquery or a restructure of html so that #calendarTool is a sibling to or nested under #calendar
Quick Jquery example: JS Fiddle
$('#calendar').on('mouseover', function() {
$('#calendarTool').css('background', 'blue');
});
$('#calendar').on('mouseout', function() {
$('#calendarTool').css('background', 'transparent');
});