.icone-sintese:before{filter:drop-shadow(0 -.2px 0 currentColor) drop-shadow(-.2px 0 0 currentColor) drop-shadow(0 .2px 0 currentColor) drop-shadow(.2px 0 0 currentColor);text-shadow:0 -.2px 0 currentColor,-.2px 0 0 currentColor,0 .2px 0 currentColor,.2px 0 0 currentColor}