.yui3-app-transitioning .yui3-app-views,
overflow-x: hidden;
position: relative;
white-space: nowrap;
}
.yui3-app-transitioning .yui3-app-views > *,
display: inline-block;
width: 100%;
vertical-align: top;
white-space: normal;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}