:root{--color-ok: green;--color-error: darkred;--background-color: rgb(255, 250, 240);--selected-color: lightcyan}html{background-color:var(--background-color);z-index:0}button{cursor:pointer}.ajax_ok{color:var(--color-ok)}.ajax_error{color:var(--color-error)}.top_right{position:absolute;right:0;top:0}.dipl_aa{background-color:#fff;color:#000}.dipl_dea{background-color:#40ff00;color:#000}