javascript - Application of styling widgets in jQuery seems to differ -


in code snippet demonstrate how i'm applying different classes 2 different accordion widgets using #divid .class. works great, when try apply style dialog widget, doesn't perform same. can't figure out. why same rules not apply? i'm new jquery.

$(function() {    $("#dialog").dialog();  });    $(function() {    $("#dialog2").dialog();  });    $(function() {    $("#accordion").accordion();  });    $(function() {    $("#accordion2").accordion();  });
#dialog .ui-dialog-titlebar {    background-image: none;    background-color: red;  }  #dialog2 .ui-dialog-titlebar {    background-image: none;    background-color: green;  }  #accordion .ui-accordion-header {    background-image: none;    background-color: red;  }  #accordion2 .ui-accordion-header {    background-image: none;    background-color: green;  }
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>  <link rel="stylesheet" href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">  <script src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>    <div id="dialog" title="dialog">    <h3>1</h3>    <div></div>    <h3>2</h3>    <div></div>  </div>    <div id="dialog2" title="dialog 2">    <h3>1</h3>    <div></div>    <h3>2</h3>    <div></div>  </div>    <div id="accordion">    <h3>1</h3>    <div></div>    <h3>2</h3>    <div></div>  </div>    <div id="accordion2">    <h3>1</h3>    <div></div>    <h3>2</h3>    <div></div>  </div>

the element call dialog() on not outer wrapper title bar in...the title sibling since plugin wraps element outer element contains both.

there option set class on outer wrapper:

$("#dialog").dialog({dialogclass: "dialog-red"});

then in css:

.dialog-red .ui-dialog-titlebar {   background-image: none;   background-color: red; } 

$(function() {    $("#dialog").dialog({      dialogclass: "dialog-red"    });  });
.dialog-red .ui-dialog-titlebar {    background-image: none;    background-color: red;  }
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>  <link rel="stylesheet" href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">  <script src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>    <div id="dialog" title="dialog">    <h3>1</h3>    <div></div>    <h3>2</h3>    <div></div>  </div>


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