/* Tabs rund und farbig */
#TabsToolbar .tabbrowser-tab {
color: #0000FF !important;
border: 1px solid !important;
border-bottom: none !important;
border-radius: 20px 20px 0 0 !important;
/*border-radius: 15px 15px 0 0 / 30px 30px 0 0 !important;*/
margin: 3px 1px 1px 2px !important;
padding: 1px 0 !important;
}