You should use "Arial, Helvetica, sans-serif " because if 'Arial' isn't available the font will be changed to 'Helvetica' which is the same ... ... <看更多>

h1, h2, h3, h4, h5 {. font-family: "OpenSans", "Helvetica Neue", "Helvetica", Arial, Verdana, sans-serif;. font-weight: 300;. }. ... <看更多>

<generic-family> ; sans-serif, Arial, Arial Black, Open Sans, Lucida Sans, Trebuchet MS, Verdana, Helvetica, Helvetica Neue, Gill Sans, Futura, San Fransisco, ... ... <看更多>