@font-face{font-family:open_sans-regular;src:url(/webfonts/OpenSans-Regular.ttf)format('truetype')}@font-face{font-family:open_sans-bold;src:url(/webfonts/OpenSans-Bold.ttf)format('truetype')}@font-face{font-family:open_sans-light;src:url(/webfonts/OpenSans-Light.ttf)format('truetype')}body{font-family:open_sans-regular}b,strong{font-weight:600;font-family:open_sans-bold}#btn-back-to-top{position:fixed;bottom:20px;right:20px;display:none}