string url = HttpContext.Current.Request.Uri.OriginalString;
TaxonomyNavigationContext class ontains several properties which will help you to work with friendly URLs programmatically,
For Example:
 HasFriendlyUrl and ResolvedDisplayUrl (all properties can be found here).
you can get friendly URL using the following code:

  string url = "";
if (TaxonomyNavigationContext.Current != null &&
     TaxonomyNavigationContext.Current.HasFriendlyUrl)
 {
     url = SPUtility.GetFullUrl(SPContext.Current.Site,
          TaxonomyNavigationContext.Current.ResolvedDisplayUrl);
  }

 CSS, Selectors and its rules for CSS Specificity and you will be able to master any CSS problem.

In your scenario you can wrap your content in a DIV unique  selectors ID

<div id='myCEWP'>
  <H1>Hello World!</H1>
</div>
And then apply your CSS only to that one H1 in the DIV :

<style>
   #myCEWP > H1 {
     color:green;
   }
</style>

Server Side Code: SPContext.Current.FormContext.FormMode var inDesignMode = document.forms[MSOWebPartPageFormName].MSOLayout_InDesignMode.value; if (inDesignMode == "1") { // page is in edit mode } else { // page is in browse mode } <input type="hidden" name="MSOLayout_InDesignMode" id="MSOLayout_InDesignMode" value="1" /> Update: for wiki pages, you will need _wikiPageMode parameter: var wikiInEditMode = document.forms[MSOWebPartPageFormName]._wikiPageMode.value; if (wikiInEditMode == "Edit") { // wiki page is in edit mode } else { // wiki page is not in edit mode } CSOM or ECMA Script: SP.Ribbon.PageState.Handlers.isInEditMode() Returns true or false. I use this in publishing pages.

<script src="/Shared%20Documents/jquery-1.10.2.min.js"></script> //Edit your correct path
<script src="/Shared%20Documents/sputility.min.js"></script> //Edit your correct path

<script>
// wait for the window to load
$(document).ready(function () {

    var WorskspaceSetupField = SPUtility.GetSPField('WorkspaceSetup');

    var showOrHideField = function() {
        var workspaceSetupFieldValue = WorskspaceSetupField.GetValue();

        if(workspaceSetupFieldValue  == 'No') {
            SPUtility.HideSPField('LaptopSetup');
        }
        else {
            SPUtility.ShowSPField('LaptopSetup');
        }
    };

    // run at startup (for edit form)
    showOrHideField();

    // make sure if the user changes the value we handle it
    $(WorskspaceSetupField.Dropdown).on('change', showOrHideField);
});
</script>