made changes to buttons

With the current arrangement of the buttons the default button (“the blue button”) is always the first child so I removed all the [data-state=…..] and just put #tw-actions button:first-child and #tw-actions button:first-child:hover for the blue default buttons and div#tw-actions > button:not(:first-child) and div#tw-actions > button:not(:first-child):hover for the gray buttons. I will make changes to this when we have decided on how we are going to arrange the buttons.