@form-prefix-cls: ~"@{css-prefix}form"; @form-item-prefix-cls: ~"@{form-prefix-cls}-item"; .@{form-prefix-cls} { .@{form-item-prefix-cls}-label { text-align: right; vertical-align: middle; float: left; font-size: @font-size-small; color: @text-color; line-height: 1; padding: 10px 12px 10px 0; box-sizing: border-box; } &-label-left .@{form-item-prefix-cls}-label { text-align: left; } &-label-top .@{form-item-prefix-cls}-label { float: none; display: inline-block; padding: 0 0 10px 0; } &-inline{ .@{form-item-prefix-cls} { display: inline-block; margin-right: 10px; vertical-align: top; } } } .@{form-item-prefix-cls} { margin-bottom: 24px; vertical-align: top; .clearfix(); &-content { position: relative; line-height: 32px; font-size: @font-size-small; } &-required { .@{form-item-prefix-cls}-label:before { content: '*'; display: inline-block; margin-right: 4px; line-height: 1; font-family: SimSun; font-size: @font-size-small; color: @error-color; } } &-error { // todo } }