checkbox { width: 28rpx; height: 28rpx; } checkbox .wx-checkbox-input { width: 28rpx; height: 28rpx; } checkbox .wx-checkbox-input.wx-checkbox-input-checked { background: #3296fa; } checkbox .wx-checkbox-input.wx-checkbox-input-checked::before { width: 28rpx; height: 28rpx; line-height: 28rpx; text-align: center; font-size: 22rpx; color: #fff; background: transparent; transform: translate(-50%, -50%) scale(1); -webkit-transform: translate(-50%, -50%) scale(1); }