.intro {
  color: #f0f0f0;
  padding: 15px 0;
  text-align: center;
  font-size: 25px;
  background-color: #0e58c8;
}

.intro-content {
  width: 1000px;
  margin: 20px auto;
}

.intro-content img {
  width: 100%;
  height: 490px;
}

.part-one {
  font-size: 25px;
  color: rgba(241, 7, 7, 0.774);
  margin-top: 40px;
  border-bottom: 2px solid rgba(241, 7, 7, 0.774);
  padding-bottom: 15px;
}

.part-two {
  text-indent: 32px;
  font-size: 16px;
  color: #4f5d73;
  margin: 20px 0;
  line-height: 24px;
}

.part-three {
  line-height: 24px;
  text-indent: 32px;
  font-size: 16px;
  color: #4f5d73;
  margin-bottom: 30px;
}

.intro-btn {
  width: 800px;
  font-size: 25px;
  border-radius: 15px;
  background-image: url('../images/btn-bg.png');
  background-repeat: repeat;
  border: 6px solid rgba(163, 107, 163, 0.548);
  text-align: center;
  color: #fff;
  display: block;
  padding: 10px 0;
  margin: 0 auto;
}