.checkbox-size() {
    &[size='large'] {
        font-size: @font-size-large;

        .@{checkbox-inner-prefix-cls} {
            .square(18px);

            &:after {
                .size(5px, 9px);
            }
        }

        &.@{checkbox-prefix-cls}-checked {
            .@{checkbox-inner-prefix-cls} {
                &:after {
                    width: 6px;
                    height: 10px;
                }
            }
        }

        .@{checkbox-prefix-cls}-indeterminate {
            .@{checkbox-inner-prefix-cls}:after {
                width: 12px;
                top: 7px;
            }
        }
    }

    &[size='small'] {
        font-size: @font-size-base;

        .@{checkbox-inner-prefix-cls} {
            .square(14px);

            &:after {
                top: 0;
                left: 3px;
            }
        }

        &.@{checkbox-prefix-cls}-checked {
            .@{checkbox-inner-prefix-cls} {
                &:after {
                    top: 1px;
                    left: 4px;
                }
            }
        }

        .@{checkbox-prefix-cls}-indeterminate {
            .@{checkbox-inner-prefix-cls}:after {
                width: 8px;
                top: 5px;
            }
        }
    }
}

.size-with-border(@size, @height, @px, @padding) {
    @{checkbox-tag-name}[size=~'"@{size}"'][type='border'],
    @{checkbox-group-tag}[size=~'"@{size}"'] @{checkbox-tag-name}[type='border'] {
        height: @height;
        line-height: @height - @px;
        padding: @padding;
    }
}