EDIT

   // label with caption and icon horizonatally aligned

   // to apply this to a Vaadin Label set 'label-nowrap'

   // as style

   .v-slot-label-nowrap {

        .v-caption, .v-label {

            display: inline;

        }

        .v-label {

            margin-left: 8px; // TODO use sass variable here

            vertical-align: baseline;

        }

   }