SyntaxError: Properties must be inside selector blocks

1、错误描述

[编译less] 09:37:49.919 [31mSyntaxError: Properties must be inside selector blocks. They cannot be in the root[39m[31m in [39mG:HBuilderXWorkES6less.less[90m on line 26, column 1:[39m
[编译less] 09:37:49.919 [90m25 @var: 'aname';[39m
[编译less] 09:37:49.919 26 [7m[31m[1mc[22montent: @@var;[39m[27m[0m[0m

2、错误原因

      由于content是css的一个属性，外面需要一个选择器，使用{}将属性包裹起来

@aname: 'Tom';
@var: 'aname';
content: @@var;

3、解决办法

@aname: 'Tom';
@var: 'aname';
p{
	content: @@var;
}