Zebra striping on custom panels layout
If you use even/odd pseudo-classes, you don't need even/odd classes

:nth-child(even)
:nth-child(odd)


Example:

.parent_class &gt; div:nth-child(even) {background: #CCC}
.parent_class &gt; div:nth-child(odd) {background: #FFF}


or

ul.yourclass li:nth-child(even) {background: #CCC}
ul.yourclass li:nth-child(odd) {background: #FFF}