* {
  margin: 0;
  padding: 0;
}
body {
  width: 100%;
  margin: auto;
}

.art-box {
  width: 1320px;
  margin: auto;
}
.art-box .hea-box {
  width: 100%;
  padding: 45px 0;
  text-align: center;
}
.art-box .hea-box h3 {
  margin-bottom: 25px;
  font-size: 45px;
  color: #222;
}
.art-box .hea-box p {
  color: rgba(153, 153, 153, 1)
}
.art-box .hea-box p span{
  margin: 0 10px;
  color: rgba(153, 153, 153, 1)
}
.art-box .art-inf-box {
  padding: 45px 0;
  border-top: 1px solid rgba(216, 216, 216, 1);
  border-bottom: 1px solid rgba(216, 216, 216, 1);
}

.art-inf-box {
  font-size: 1.6rem;
  line-height: 1.9;
  margin-top: 20px;
}
.art-inf-box p {
  text-align: justify;
  margin: 15px 0;
}
.art-inf-box p:first-child {
  margin: 0 0 15px 0;
}
.art-inf-box img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
  display: block;
  margin: 0 auto;
  opacity: 1!important;
  object-fit: scale-down;
}

@media screen and (min-width: 900px) {
  .art-inf-box p {
    text-indent: 2em;
  }
}