#intro {
  background-image: url(../img/sub/guide/bg.jpg);
}

/* ----- content start ----- */
#content .imgs {
  width: 100%;
  overflow: hidden;
}

#content .text_box {
  padding-left: 80px;
  padding-right: 80px;
}

#content .text_box p {
  font-size: 2rem;
  line-height: 3rem;
}

#content .con {
  width: 100%;
  overflow: hidden;
  margin-top: 50px;
}

#content .con ul {
  width: 100%;
  overflow: hidden;
}

#content .con li {
  float: left;
  width: 25%;
  overflow: hidden;
}

#content .con .boxes {
  width: 95%;
  overflow: hidden;
  border: 1px solid #ccc;
  box-sizing: border-box;
  padding: 15px;
  margin-bottom: 5%;
  font-size: 2rem;
}

#content .con .boxes:hover {
  background-color: #555;
  border: 1px solid #555;
  transition: all 0.3s;
}

#content .con .boxes a {
  background-color: #1c1c1c;
  display: block;
}

#content .con .boxes:hover p,
#content .con .boxes:hover i {
  color: #fff;
  transition: all 0.3s;
}

#content .con .boxes p {
  margin-left: 10px;
  float: left;
  color: #1c1c1c;
}

#content .con .boxes i {
  color: #1c1c1c;
  float: right;
}

#content .end {
  width: 100%;
  color: #777;
  font-size: 1.6rem;
  line-height: 2.6rem;
}

@media screen and (max-width: 1400px) {
  #content .text_box {
    padding: 0;
  }

  #content .con li {
    width: 33.33%;
  }

  #content .con .boxes p {
    margin-left: 0;
  }
}

@media screen and (max-width: 850px) {
  #content .con .boxes {
    font-size: 1.8rem;
    padding: 15px 10px;
  }
}

@media screen and (max-width: 720px) {
  #content .text_box p {
    font-size: 1.8rem;
    line-height: 2.4rem;
  }
}

@media screen and (max-width: 650px) {
  #content .con li {
    width: 50%;
  }
}

@media screen and (max-width: 520px) {
  #content .con li {
    width: 100%;
  }

  #content .con .boxes {
    padding: 20px 10px;
  }

  #content .end {
    line-height: 2rem;
  }
}