or">(</span><span class="ID">None</span><span class="Operator">,</span> <span class="ID">float</span><span class="Operator">,</span> <span class="Operator">[</span><span class="String">'px'</span><span class="Operator">,</span> <span class="String">'%'</span><span class="Operator">]</span><span class="Operator">,</span> <span class="ID">defaultunit</span><span class="Operator">=</span><span class="String">'px'</span><span class="Operator">)</span><span class="Operator">)</span><span class="Operator">:</span