.main-wrap {
    vertical-align: top;
    margin: 0 auto;
    margin-top: 100px;
    width: 848px;
    text-align: center;
}

h3 {
    margin: 0;
}

a {
    text-decoration: none;
}

body {
    font-family: Helvetica Neue, Helvetica, Microsoft YaHei, sans-serif;
}

.content {
    vertical-align: top;
    display: inline-block;
    margin-left: 10px;
    text-align: left;
}

.line {
    color: #666;
    font-size: 20px;
}
.line.type2 {
	font-size: 20px;
	margin-bottom: 12px;
}

.btn {
    margin: 0 14px;
    display: inline-block;
    width: 130px;
    height: 40px;
    vertical-align: -13px;
}
.btn.back {
    background: url(/images/back_normal.png?12) no-repeat;
}
.btn.home {
    background: url(/images/home_normal.png?12) no-repeat;
}
.btn.back:hover {
    background: url(/images/back_hover.png?2) no-repeat;
}
.btn.home:hover {
    background: url(/images/home_hover.png?2) no-repeat;
}

img {
  transition: filter 0.3s ease-in-out;
  filter: opacity(70%);
}
img:hover {
  filter: opacity(90%);
}
.searchbox{
margin-bottom:20px;
}
form.searchstyle input[type=text] {
  padding: 10px;
  font-size: 17px;
  border: 1px solid grey;
  float: left;
  width: 550px;
  background: #f1f1f1;
}

form.searchstyle button {
  float: left;
  width: 185px;
  padding: 10px;
  background: #1EAA39;
  color: white;
  font-size: 17px;
  border: 1px solid grey;
  border-left: none;
  cursor: pointer;
}

form.searchstyle button:hover {
  background: #23C744;
}

form.searchstyle::after {
  content: "";
  clear: both;
  display: table;
}
.backgrounds{
font-size:14px;background-image:url('http://www.liuxuepaper.com/images/bg.png');background-size:contain;
}