Use multiple css stylesheets in the same html page

Question

How would I use multiple CSS stylesheets in the same HTML page where both stylesheets have a banner class  for instance  How do you specify which class you are referring to

User · Answer

You can t and don t   All CSS rules on page will be applied  the HTML  knows  nothing about this process   and the individual rules with the highest specificity will  stick   Specificity is determined by the selector and by the order they appear in the document  All in all the point is that this is part of the cascading  You should refer to one of the very many CSS tutorials on the net

User · Answer

Style sheets are  effectively  concatenated into a single style sheet in the order in which they appear in the HTML source   The normal rules for applying rulesets then apply  i e  by specificity with the last ruleset that defines a given property winning in the event of a tie and  important throwing a spanner into the works

User · Answer

The one you include last will be the one that is used  Note however that if any rules has  important in the first stylesheet they will take priority

User · Answer

Here is a simple alternative  1  Suppose we have two css files  say my1 css and my2 css  In the html document head type a link to one of them  within an element with an ID  say  quot demo quot    2  In the html document head body define two buttons calling two JS functions   select css1   select css2  3  Finally  in the JS file type the two functions as follows  function select css1     document getElementById  quot demo quot   innerHTML         function select css2     document getElementById  quot demo quot   innerHTML

User · Answer

You can t control which you re referencing  given the same level of specificity in the rule  e g  both are simply  banner  the stylesheet included last will win     It s per-property  so if there s a combination going on  for example one has background  the other has color  then you ll get the combination   if a property is defined in both  whatever it is the last time it appears in stylesheet order wins

User · Answer

You can t  The last stylesheet  you specify will be the one html page will use  Think of it as a big single  css document

User · Answer

Yes  you can include multiple style sheets  but you need to label them as alternate style sheets and give the user some way to activate them using JavaScript - perhaps by clicking a link    To create an alternate style sheet     lt link type  text css  href  nameOfAlterateStyleSheet css  rel  alternate stylesheet  title  Blue    gt    Next create a method in your Javascript file that will  1  Load all the style sheets in an array 2  Example   function getCSSArray     var links   document getElementsByTagName  link    var link  for var i   0  i  lt  links length  i          link   links i       if  stylesheet  test link rel                 sheets push link                return sheets      Then go through the array using some type of if else loop that disables the style sheets you don t want and enables the style sheet you want   You can write a separate method or insert the loop into the method above  I like to use the onload command to load the CSS array with the page  then call the printView method    function printView     var sheet  var title1    printVersion   for i   0  i  lt  sheets length  i          sheet   sheets i               if sheet title    title1                sheet disabled   false            else               sheet disabled   true          Lastly  create code in your HTML document that the user will activate the JavaScript method such as     lt a href     onClick   methodName     gt Link Name lt  a gt

User · Answer

You never refer to a specific style sheet  All CSS rules in a document are internally fused into one    In the case of rules in both style sheets that apply to the same element with the same specificity  the style sheet embedded later will override the earlier one   You can use an element inspector like Firebug to see which rules apply  and which ones are overridden by others

User · Answer

Think of it as your stylesheet s  referring to   selecting   elements in your HTML page  not the other way around

[html] Use multiple css stylesheets in the same html page

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