.propavana1 {  border: #FFFFFF solid; border-width: 0px 0px 1px}
.prop2 {  border: #FFFFFF solid; border-width: 1px 0px 0px 1px}
.prova {  border-color: black #FFFFFF; border-style: solid; border-top-width: 0px; border-right-width: 2px; border-bottom-width: 0px; border-left-width: 2px}