Writing mathematical and chemical equations on the Web with CSS The double arrow in the equilibrium reaction For some reason, unicode character ⇄ ‘RIGHTWARDS ARROW OVER LEFTWARDS ARROW’ (⇄) does not displayed properly in MS Internet Explorer 8. C + O2 → CO2 HTML Code: <div class=”eq-c”> C + O<sub>2</sub> <span class=”dblarrow”>→</span> CO<sub>2</sub> </div> CSS […]