* {
	box-sizing:border-box;
}
body {
	margin:0;
	padding:0;
	font-weight:500;
	font-family:"Microsoft YaHei","宋体","Segoe UI","Lucida Grande",Helvetica,Arial,sans-serif,FreeSans,Arimo;
}
#container {
	width:100%;
	height:50px;
	margin:0 auto;
}
div.search {
	padding:10px 0;
}
form {
	position:relative;
	width:30%;
	margin:0 auto;
}
input,button {
	border:none;
	outline:none;
}
.bar input {
	width:100%;
	height:42px;
	padding-left:13px;
	border:2px solid #54a0ff;
	border-radius:5px;
	background:transparent;
	top:0;
	left:0;
}
@media (max-width:1199px) {
	form {
	width:50%;
}
}@media (max-width:991px) {
	form {
	width:60%;
}
}@media (max-width:768px) {
	form {
	width:70%;
}
}.bar button {
	height:42px;
	width:100px;
	cursor:pointer;
	position:absolute;
	background:#54a0ff;
	border-radius:0 5px 5px 0;
	font-size:17px;
	color:white;
	text-align:justify;
	top:0;
	right:0;
}
.bar button:hover {
	background:#1e90ff;
}
/* 下拉框 */
        .select {
	position:absolute;
	top:0;
	right:0;
	margin:0;
}
.box {
	margin:0;
	padding:0;
}
.title {
	top:0;
	height:42px;
	width:42px;
	background-color:#54a0ff;
	text-align:center;
	line-height:45px;
	font-size:20px;
	color:white;
	border-radius:0 5px 5px 0;
}
.title:hover {
	background:#1e90ff;
}
.content {
	position:absolute;
	left:-42px;
	border-radius:5px;
}
.content li {
	height:0px;
	width:50px;
	background-color:#54a0ff;
	transition:all .3s linear;
	overflow:hidden;
	line-height:42px;
	text-align:center;
}
.box:hover .content li {
	height:42px;
}
.content li:nth-child(1) {
	transition-delay:0ms
}
.content li:nth-child(2) {
	transition-delay:100ms
}
.content li:nth-child(3) {
	transition-delay:200ms
}
.content li:nth-child(4) {
	transition-delay:300ms
}
ul,li {
	list-style:none;
	cursor:pointer;
}
.content li:hover {
	background:#1e90ff;
}