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center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}#main-content .item__logo.edge{background:url("https://up.img.heidiancdn.com/edge@2x.png?imageView2/2/w/90/h") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.chrome{background:url("https://up.img.heidiancdn.com/chrome@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.firefox{background:url("https://up.img.heidiancdn.com/firefox@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.safari{background:url("https://up.img.heidiancdn.com/safari@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.qh-360{background:url("https://up.img.heidiancdn.com/qh-360@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.ie{background:url("https://up.img.heidiancdn.com/ie@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}html.backgroundsize #main-content .item__logo.edge{background:url("https://up.img.heidiancdn.com/edge@2x.png") no-repeat center;width:100%;height:90px;background-size:contain;-webkit-transform:scale(1);-moz-transform:scale(1);-ms-transform:scale(1);-o-transform:scale(1);transform:scale(1);-webkit-transition:-webkit-transform .35s ease-in-out;-moz-transition:-moz-transform .35s ease-in-out;transition:transform .35s ease-in-out}#main-content .browsers-wrapper{padding:0;margin:0 auto 120px;display:block;zoom:1}@media (max-width: 1170px){#main-content .browsers-wrapper{width:950px}}@media (max-width: 992px){#main-content .browsers-wrapper{width:570px}}@media (max-width: 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