Fixes #163 Spinner not visible on Firefox
Fixes #163 Spinner not visible on Firefox

homosepian/vizabi,IncoCode/vizabi,IncoCode/vizabi,alliance-timur/vizabi,logicerpsolution/vizabi,Rathunter/vizabi,IncoCode/vizabi,alliance-timur/vizabi,vizabi/vizabi,dab2000/vizabi,alliance-timur/vizabi,jdk137/vizabi,vizabi/vizabi,sergey-filipenko/vizabi,Gapminder/vizabi,maximhristenko/vizabi,maximhristenko/vizabi,jdk137/vizabi,Rathunter/vizabi,buchslava/vizabi,maximhristenko/vizabi,Rathunter/vizabi,logicerpsolution/vizabi,logicerpsolution/vizabi,dab2000/vizabi,Gapminder/vizabi,dab2000/vizabi,sergey-filipenko/vizabi,jdk137/vizabi,homosepian/vizabi,sergey-filipenko/vizabi,homosepian/vizabi,Gapminder/vizabi,buchslava/vizabi,buchslava/vizabi