.bordenegro { border: #000000; border-style: solid; border-top-width: 1px; border-right-width: 
1px; border-bottom-width: 1px; border-left-width: 1px} .bordetabla { border-color: 
black #000000; border-style: solid; border-top-width: none; border-right-width: 
1px; border-bottom-width: none; border-left-width: 1px}