body {
  background: url(../img/ico.png) no-repeat center 0 #448cff;
}
.bbox {
  width: 1000px;
  margin: 0 auto;
  position: relative;
}
.bbox img {
  position: absolute;
  left: 50%;
  top: 264px;
  animation: aaa 5s ease-in-out infinite;
}
@keyframes aaa {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
.tain_header {
  width: 100%;
  text-align: center;
  padding-top: 100px;
}
.tain_header h2 {
  font-size: 42px;
  font-weight: bold;
  color: #ffffff;
}
.tain_content {
  width: 100%;
  margin-top: 300px;
  line-height: 40px;
}
.tain_content p {
  color: #ffffff;
  font-size: 22px;
  text-indent: 2em;
}
.tain_content p:nth-child(1) {
  text-indent: 0;
}
.tain_content p:nth-child(4) {
  text-indent: 0;
  float: right;
  text-align: right;
}
.tain_content p span {
  color: #ffea00;
  font-weight: bold;
}

/* @media screen and (max-width: 768px) {
  .tain_header h2 {
    font-size: 0.42rem;
    font-weight: bold;
    color: #ffffff;
  }
  .bbox {
    width: 90%;
    margin: 0 auto;
  }
  .tain_content {
    width: 100%;
    margin-top: 5.8rem;
  }
  .tain_content p {
    color: #ffffff;
    font-size: 0.28rem;
    line-height: 0.5rem;
  }
  .tain_content p span {
    color: #ffea00;
    font-weight: bold;
    padding: 0 0.08rem;
  }
} */