collapsible-div.css

.ctools-collapsible-container .ctools-toggle {
  float: left;
  width: 21px;
  height: 21px;
  cursor: pointer;
  background: url(../images/collapsible-expanded.png) no-repeat 7px 7px;
}

.ctools-collapsible-container .ctools-collapsible-handle {
  display: none;
}

html.js .ctools-collapsible-container .ctools-collapsible-handle {
  display: block;
}

.ctools-collapsible-container .ctools-collapsible-handle {
  cursor: pointer;
}

.ctools-collapsible-container .ctools-toggle-collapsed {
  background-image: url(../images/collapsible-collapsed.png);
}

File

css/collapsible-div.css

View source 
  1. .ctools-collapsible-container .ctools-toggle {

  2.   float: left;

  3.   width: 21px;

  4.   height: 21px;

  5.   cursor: pointer;

  6.   background: url(../images/collapsible-expanded.png) no-repeat 7px 7px;

  7. }

  8. 

  9. .ctools-collapsible-container .ctools-collapsible-handle {

  10.   display: none;

  11. }

  12. 

  13. html.js .ctools-collapsible-container .ctools-collapsible-handle {

  14.   display: block;

  15. }

  16. 

  17. .ctools-collapsible-container .ctools-collapsible-handle {

  18.   cursor: pointer;

  19. }

  20. 

  21. .ctools-collapsible-container .ctools-toggle-collapsed {

  22.   background-image: url(../images/collapsible-collapsed.png);

  23. }