CSS3 过渡特性创建信封效果的联系表单

	#form_wrap { overflow:hidden; height:446px; position:relative; top:0px;  		-webkit-transition: all 1s ease-in-out .3s;  		-moz-transition: all 1s ease-in-out .3s;  		-o-transition: all 1s ease-in-out .3s;  		transition: all 1s ease-in-out .3s;}  	  	#form_wrap:before {content:"";  		position:absolute;  		bottom:128px;left:0px;  		background:url('images/before.png');  		width:530px;height: 316px;}  	  	#form_wrap:after {content:"";position:absolute;  		bottom:0px;left:0;  		background:url('images/after.png');  		width:530px;height: 260px; }    	#form_wrap.hide:after, #form_wrap.hide:before {display:none; }  	#form_wrap:hover {height:776px;top:-200px;}      	form {background:#f7f2ec url('images/letter_bg.png');   		position:relative;top:200px;overflow:hidden;  		height:200px;width:400px;margin:0px auto;padding:20px;   		border: 1px solid #fff;  		border-radius: 3px;   		-moz-border-radius: 3px; -webkit-border-radius: 3px;  		box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 27px #fff;  		-moz-box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 14px #fff;  		-webkit-box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 27px #fff;  		-webkit-transition: all 1s ease-in-out .3s;  		-moz-transition: all 1s ease-in-out .3s;  		-o-transition: all 1s ease-in-out .3s;  		transition: all 1s ease-in-out .3s;}      		#form_wrap:hover form {height:530px;}    		label {  			margin: 11px 20px 0 0;   			font-size: 16px; color: #b3aba1;  			text-transform: uppercase;   			text-shadow: 0px 1px 0px #fff;  		}    		input[type=text], textarea {  			font: 14px normal normal uppercase helvetica, arial, serif;  			color: #7c7873;background:none;  			width: 380px; height: 36px; padding: 0px 10px; margin: 0 0 10px 0;  			border:1px solid #f8f5f1;  			-moz-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px;  			-moz-box-shadow: inset 0px 0px 1px #726959;  			-webkit-box-shadow:  inset 0px 0px 1px #b3a895;   			box-shadow:  inset 0px 0px 1px #b3a895;  		}	    		textarea { height: 80px; padding-top:14px;}    		textarea:focus, input[type=text]:focus {background:rgba(255,255,255,.35);}    		#form_wrap input[type=submit] {  			position:relative;font-family: 'YanoneKaffeesatzRegular';   			font-size:24px; color: #7c7873;text-shadow:0 1px 0 #fff;  			width:100%; text-align:center;opacity:0;  			background:none;  			cursor: pointer;  			-moz-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px;   			-webkit-transition: opacity .6s ease-in-out 0s;  			-moz-transition: opacity .6s ease-in-out 0s;  			-o-transition: opacity .6s ease-in-out 0s;  			transition: opacity .6s ease-in-out 0s;  		}    		#form_wrap:hover input[type=submit] {z-index:1;opacity:1;  			-webkit-transition: opacity .5s ease-in-out 1.3s;  			-moz-transition: opacity .5s ease-in-out 1.3s;  			-o-transition: opacity .5s ease-in-out 1.3s;  			transition: opacity .5s ease-in-out 1.3s;}    			#form_wrap:hover input:hover[type=submit] {color:#435c70;}

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