Update masthead subtitle style
Update masthead subtitle style

1nv4d3r5/dashboards,uditk/dashboards,huangchaosuper/dashboards,Brijen/dashboards,shusenl/dashboards,ruleant/dashboards,ccollins0601/dashboards,Diwahars/dashboards,SensitMarc/dashboards,seanrsmith9/dashboards,mikedizon/dashboards,huangchaosuper/dashboards,heatery/dashboards,ch0ck/dashboards,obbectim/dashboards,SensitMarc/dashboards,esdrastavares/dashboards,seanrsmith9/dashboards,uditk/dashboards,PeggApp/pegg-dashboards,iSC-Labs/dashboards,tiagobarreto/dashboards,mikedizon/dashboards,keen/dashboards,esdrastavares/dashboards,maximilianoalves/dashboards,EMIAOZANG/dashboards,christabor/dashboards,Wiki616/dashboards,100star/dashboards,arrawatia/dashboards,xuewenfei/dashboards,maximilianoalves/dashboards,acorbi/dashboards,Diwahars/dashboards,Gratzi/pegg-dashboards,christabor/dashboards,shusenl/dashboards,johnulist/dashboards,acorbi/dashboards,dakshika/dashboards,jpzhangvincent/dashboards,durvalrafael/dashboards,PhoenixTeam/dashboards,uditk/dashboards,TRex22/dashboards,ccollins0601/dashboards,xuewenfei/dashboards,Gratzi/pegg-dashboards,ch0ck/dashboards,PeggApp/pegg-dashboards,PhoenixTeam/dashboards,arrawatia/dashboards,obbectim/dashboards,Brijen/dashboards,heatery/dashboards,keen/dashboards,jpzhangvincent/dashboards,EMIAOZANG/dashboards,1nv4d3r5/dashboards,imwm/dashboards,Mahdidridi/dashboards,Mahdidridi/dashboards,dakshika/dashboards,100star/dashboards,durvalrafael/dashboards,imwm/dashboards,iSC-Labs/dashboards,Wiki616/dashboards