Stretching container two blocks with float: left

div.popup > div { display: inline-block; vertical-align: text-top; } 

/* * Gecko hack; Pre-FF3 Gecko uses-moz-inline-box instead of inline-block. */ html>body .goog-inline-block { display: -moz-inline-box; /* Ignored by FF3 and later. */ display: inline-block; /* Ignored by pre-FF3 Gecko. */ } /* * Default rule; only Safari, Webkit, and Opera handle it without hacks. */ .goog-inline-block { position: relative; display: inline-block; } /* * Pre-IE7 IE hack. On IE, "display: inline-block" only gives the element * layout, but doesn't give it inline behavior. Subsequently setting display * to inline does the trick. */ * html .goog-inline-block { display: inline; } /* * IE7-only hack. On IE, "display: inline-block" only gives the element * layout, but doesn't give it inline behavior. Subsequently setting display * to inline does the trick. */ *:first-child+html .goog-inline-block { display: inline; }