.bk1 { } .bk1 { border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: none; border-right-style: none; border-bottom-style: solid; border-left-style: none; border-top-color: #D6D6D6; border-right-color: #D6D6D6; border-bottom-color: #D6D6D6; border-left-color: #D6D6D6; } .bk2 { border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: none; border-bottom-style: solid; border-left-style: none; border-top-color: #BFBFBF; border-right-color: #BFBFBF; border-bottom-color: #BFBFBF; border-left-color: #BFBFBF; }