body {
    background-color: #fff;
}
input[type="text"] {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  width: 100%;
  height: -webkit-calc(3em + 11px);
  height: calc(3em + 4px);/*边框高度*/
  margin: 0 0 1em;
  padding: 1em;
  border: 1px solid #cccccc;
  border-radius: 0.8em;/*弧度大小*/
  background: #fff;
  resize: none;
  outline: none;
}
input[type="text"][required]:focus {
  border-color: #00bafa;
}
input[type="text"][required]:focus + label[placeholder]:before {
  color: #ffffff;/*上跳字体颜色*/
}
input[type="text"][required]:focus + label[placeholder]:before,
input[type="text"][required]:valid + label[placeholder]:before {
  -webkit-transition-duration: .2s;
  transition-duration: .2s;
  -webkit-transform: translate(0, -1.5em) scale(0.9, 0.9);
  -ms-transform: translate(0, -1.5em) scale(0.9, 0.9);
  transform: translate(0, -2.1em)/*上跳的高度*/ scale(1, 1) ;
}
input[type="text"][required]:invalid + label[placeholder][alt]:before {
  content: attr(alt);
}
input[type="text"][required] + label[placeholder] {
  display: block;
  pointer-events: none;
  font-family:"微软雅黑";
  font-size:14px;
  line-height: 1.82em;/*字体居中*/
  margin-top: -webkit-calc(-3em - 2px);
  margin-top: calc(-3em - 2px);
  margin-bottom: -webkit-calc((3em - 1em) + 2px);
  margin-bottom: calc((3em - 1em) + 2px);
}
input[type="text"][required] + label[placeholder]:before {
  content: attr(placeholder);
  display: inline-block;
  margin: 0 -webkit-calc(1em + 2px);
  margin: 0 calc(1em + 2px);
  padding: 0 2px;
  color: #898989;
  white-space: nowrap;
  -webkit-transition: 0.3s ease-in-out;
  transition: 0.3s ease-in-out;
    background-image: -webkit-linear-gradient;/*省略前面的字*/
  -webkit-background-size: 100% 5px;
  background-size: 100% 5px;
  background-repeat: no-repeat;
  background-position: center;
}
/*提交*/
#main10_content4 button[type="submit"] {
	cursor:pointer;
	width:100%;
	height:45px;
	border:none;/*不显示边框*/
	background:#30acec;
	font-family:"微软雅黑";
	color:#FFF;
	margin:0 0 5px;
	padding:10px;
	font-size:14px;
	border-radius: 0.8em;/*弧度大小*/
}

#main10_content4 button[type="submit"]:hover {
	background:#09C;
	-webkit-transition:background 0.3s ease-in-out;
	-moz-transition:background 0.3s ease-in-out;
	transition:background-color 0.3s ease-in-out;
}

#main10_content4 button[type="submit"]:active { box-shadow:inset 0 1px 3px rgba(0, 0, 0, 0.5); }