I am working on design using SLDS classes , I am using Discussion Feed here is the link . The icons for attach file and add user are not working. What am I missing .
What browser are you using? The tag has numerous browser compatibility issues- I've seen the orientation break for icons when two SLDS icons are included in the same parent container. Chrome/Firefox. The tag also flat out doesn't work in IE11.
Would suggest converting the SVGs into static images or icon fonts, then using that instead of the pants-on-head SLDS approach that seems to have been taken because Lightning doesn't support the use of SVG tags