Frutiger, from 1976, has been particularly influential in the development of the modern humanist sans genre, especially designs intended to be particularly legible above all other design considerations. The category expanded greatly during the 1980s and 1990s, partly as a reaction against the overwhelming popularity of Helvetica and Univers and also due to the need for legible fonts on low-resolution computer displays. Designs from this period intended for print use include FF Meta, Myriad, Thesis, Charlotte Sans, Bliss, Skia and Scala Sans, while designs created for computer use include Microsoft's Tahoma, Trebuchet, Verdana, Calibri and Corbel, as well as Lucida Grande, Fira Sans and Droid Sans. Humanist sans-serif designs can (if appropriately proportioned and spaced) be particularly suitable for use on screen or at distance, since their designs can be given wide apertures or separation between strokes, which is not a conventional feature on grotesque and neo-grotesque designs.