.kuang {  border-color: black black black #696969; border-style: solid; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 1px}
.kuang2 {  border-color: #333333 black black; border-style: solid; border-top-width: 1; border-right-width: 0; border-bottom-width: 0; border-left-width: 0}
.kuang3 {  border-color: black #999999 #999999; border-style: solid; border-top-width: 0; border-right-width: 1; border-bottom-width: 1; border-left-width: 1}
.kuang4 {  border: #999999; border-style: solid; border-top-width: 1; border-right-width: 1; border-bottom-width: 1; border-left-width: 1}
.kuang5 {  border-color: black black #999999; border-style: solid; border-top-width: 0; border-right-width: 0; border-bottom-width: 1; border-left-width: 0}
.kuang6 {  border-color: black black black #999999; border-style: solid; border-top-width: 0; border-right-width: 0; border-bottom-width: 0; border-left-width: 1}