.@{prefixClass}-panel-select { float: left; overflow-y:auto; font-size: 12px; border: 1px solid #e9e9e9; border-width: 0 1px; margin-left: -1px; box-sizing: border-box; width: 56px; &:first-child { border-left: 0; margin-left: 0; } &:last-child { border-right: 0; } ul { list-style: none; box-sizing: border-box; margin: 0; padding: 0; width: 100%; max-height: 144px; } li { list-style: none; box-sizing: border-box; margin: 0; padding: 0 0 0 16px; width: 100%; height: 24px; line-height: 24px; text-align: left; cursor: pointer; user-select: none; &:hover { background: #edfaff; } } &-option-selected { background: #edfaff; color: #2db7f5; } }