body {
  background: #FAF1E2;
}

* {
  margin: 0;
  padding: 0;
  list-style: none;
}

.w {
  width: 1100px;
  margin: 0 auto;
}

.lib_banner img {
  width: 100%;
  height: auto;
}

.lib_container {
  padding: 50px;
}

.lib_container ul li:nth-of-type(2n+1) {
  margin-right: 70px;
}

.lib_container ul li {
  width: 45%;
  height: 235px;
  color: #a56d22;
  padding: 40px 0px 0;
  display: inline-block;
  box-sizing: border-box;
  background: url(./img/lib_Bg.png) no-repeat;
  background-size: 100% 100%;
  overflow: hidden;
  position: relative;
  margin: 15px 0;
}

.lib_container ul li b {
  display: inline-block;
  width: 50%;
  font-size: 20px;
  line-height: 20px;
  text-align: center;
  padding: 10px 0;
  color: #a56d22;
  background: #FADEBC url(./img/line.png) top left no-repeat;
  background-size: 100% 100%;
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
  position: absolute;
  top: 0;
}

.lib_container ul li div {
  display: inline-block;
  width: 49%;
  padding: 10px;
  box-sizing: border-box;
}

.lib_container ul li div p {
  text-indent: 2rem;
  line-height: 25px;
}

.lib_container ul li img {
  display: inline-block;
  width: 50%;
  height: 100%;
  vertical-align: top;
}