css fix
css fix

Fixes a couple of CSS errors in `custom.css` which were preventing it to compile by LESS CSS compiler

miguel-pd95/gentelella,ka215/WP-Gentelella,jackbtroop62/cryptomanager,ka215/WP-Gentelella,stsilversurfer/gentelella,ghermans/gentelella,ka215/WP-Gentelella,ghermans/gentelella,Usaka/GentelellaUAO,derekyu9/g-mon-e,kimlabs/gentelella,christianesperar/gentelella,miguel-pd95/gentelella,jesusignazio/sanitariohumanitario,jdeheus/GL_Dash,chethanjjj/gentelella,jamiis/tessellate-arena,kimlabs/gentelella,christianesperar/gentelella,derekyu9/g-mon-e,kimlabs/gentelella,benjhoo/gentelella,ghermans/gentelella,chethanjjj/gentelella,puikinsh/gentelella,benjhoo/gentelella,sangwoongLee/awsome-dashboard,Usaka/GentelellaUAO,ghermans/gentelella,jamiis/tessellate-arena,jesusignazio/sanitariohumanitario,puikinsh/gentelella,jesusignazio/sanitariohumanitario,jamiis/tessellate-arena,jdeheus/GL_Dash,sangwoongLee/awsome-dashboard,stsilversurfer/gentelella,jackbtroop62/cryptomanager