<xsl:attribute name="srcdoc"> <xsl:text><!doctype html><html lang='en'><head><meta charset='utf-8' /><meta name='viewport' content='width=device-width, initial-scale=1' /><style>html{color-scheme:light dark;}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";line-height:1.4;background:Canvas;color:CanvasText;}img{max-width:100%;height:auto;}</style></head><body></xsl:text> <xsl:choose> <xsl:when test="content:encoded"> <xsl:value-of select="content:encoded" /> </xsl:when> <xsl:when test="atom:content"> <xsl:value-of select="atom:content" /> </xsl:when> <xsl:when test="atom:summary"> <xsl:value-of select="atom:summary" /> </xsl:when> <xsl:otherwise> <xsl:value-of select="description" /> </xsl:otherwise> </xsl:choose> <xsl:text></body></html></xsl:text> </xsl:attribute>