.tab-pane > .tab-header-area > .headers-region > .tab {
   /*设置圆角*/
   -fx-border-radius: 0;
   -fx-background-radius: 0;
   -fx-border-width: 0;
   -fx-text-fill: white;
   -fx-background-color: #bababa;
}

.tab-pane > .tab-header-area > .headers-region > .tab:selected {
   -fx-border-color: transparent;
   -fx-border-width: 0;
   -fx-background-radius: 0;
   -fx-background-color: #649fa3;
}