less问题

Question

@screen_width:640px;
@screen_height:960px;
.zishiying(@nwidth,@nwidth) {
  @long_width_radio:@nwidth/@nwidth;
  @zhenshi_image_width:@nwidth*@screen_width/640;
  @zhenshi_image_height:@zhenshi_image_width/@long_width_radio;
  width:@zhenshi_image_width;
  height: @zhenshi_image_height;}
.zishiyinglefttop(@nleft,@ntop)
{
@image_left_1:@nleft*@screen_width/640;
  left:@image_left_1;
@image_top_1:@ntop*@screen_height/960;
  top:@image_top_1;
}
.juzhongs(@jwidth)
{
  left:(@screen_width-@jwidth)/2;
}.logo
{
  .zishiying(100px,100px);
  .zishiyinglefttop(20px,30px);}
.js
{
  .juzhongs(30px);
}还是报错。。错误还是挺多的各种

Answer 1

首先你的less並不合格less的「運算子」 (加、減、乘、除之類的) 左右「必須」加上空格
否則以屬性論處

Answer 2

特別是加減號一定要隔開示例：這是一個模糊的運算式
@A:0;
@A-:1;
@B:2;
@C:3;
.D{ 
    zoom: @A-@B+@C;
}