Hover styles in Kendo are determined by the k-state-hover
CSS class. Selected state styles are determined by k-state-selected
Basically you need to enforce the selected styles (background and text color) to the k-state-hover class. Depending on the skin used, they are different, you can see them in the corresponding CSS file.
The k-panelbar CSS class is used for two reasons - limit the effect of the CSS rule to the PanelBar only, and increase the selector's specificity, so that it can override the skin styles.
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