uniAppXCX/uni_modules/jc-tailwind/scss/Borders/BorderWidth.scss

// Border Width
[class*='border-'] {
	border: 0 solid RGB(0 0 0 / var(--border-opacity));
}
$arr: '', 0, 2, 3, 4, 8;

@mixin render($name, $val) {
	.border#{$name} { border-width: $val; }
}

@mixin renderOther($name, $val) {
	.border-x#{$name} { border-left-width: $val; border-right-width: $val; }
	.border-y#{$name} { border-top-width: $val; border-bottom-width: $val; }
	.border-s#{$name} { border-inline-start-width: $val; }
	.border-e#{$name} { border-inline-end-width: $val; }
	.border-t#{$name} { border-top-width: $val; }
	.border-r#{$name} { border-right-width: $val; }
	.border-b#{$name} { border-bottom-width: $val; }
	.border-l#{$name} { border-left-width: $val; }
}

@each $name in $arr {
	@if ($name == '') {
		@include render($name, 1rpx);
	} @else {
		@include render(-#{$name}, #{$name * 2}rpx);
	}
}

@each $name in $arr {
	@if ($name == '') {
		@include renderOther($name, 1rpx);
	} @else {
		@include renderOther(-#{$name}, #{$name * 2}rpx);
	}
}