@import '../var.pcss'; @define-mixin hairline $border-retina-color: $border-color { content: ''; position: absolute; top: -50%; left: -50%; right: -50%; bottom: -50%; transform: scale(0.5); pointer-events: none; box-sizing: border-box; transform-origin: center; /* cover wechat button:after default transforn-origin */ border: 0 solid $border-retina-color; }