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<html><body><h2>SVG stroke-opacity attribute</h2><svg height="80" width="300" xmlns="http://www.w3.org/2000/svg"> <g fill="none" stroke="red"> <path stroke-width="2" stroke-opacity="0.4" d="M5 20 l215 0" /> <path stroke-width="4" stroke-opacity="0.4" d="M5 40 l215 0" /> <path stroke-width="6" stroke-opacity="0.4" d="M5 60 l215 0" /> </g> Sorry, your browser does not support inline SVG.</svg> </body></html>