@-webkit-viewport ,
@-moz-viewport,
@-ms-viewport,
@-o-viewport,
@viewport{width:device-width}.img{background-size:cover;background-repeat:no-repeat;background-position:center}.img.img-cover{background-size:cover}.img.img-contain{background-size:contain}.img.img-stretch{background-size:100% 100%}.img-loading{background-size:32px 32px !important;background-repeat:no-repeat !important;background-position:center !important;background-color:rgba(0,0,0,0.05)}.img-broken{background-size:32px 32px !important;background-repeat:no-repeat !important;background-position:center !important;background-color:rgba(0,0,0,0.05)}