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<div id="first-slide" ><h1 >First slide</h1 ><ul ><li >first bullet</li ><li >second bullet</li ></ul ></div ><div id="math" ><h1 >Math</h1 ><ul ><li ><span class="math" >$\frac{d}{dx}f(x)=\lim_{h\to 0}\frac{f(x+h)-f(x)}{h}$</span ></li ></ul ></div >