html {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  /* background-position:bottom  left; */
  background: url(../images/img/bg_index.jpg.png) no-repeat;
  background-size: 100% 100%;
}

.container {
  /* box-sizing: border-box; */
  position: fixed;
  top: 70.5vh;

  display: -webkit-flex;

  display: -ms-flexbox;

  display: -webkit-box;

  display: flex;
  -webkit-justify-content: space-around;
  -ms-flex-pack: distribute;
  justify-content: space-around;
  width: 100%;
  box-sizing: border-box;
  padding: 0 5%;
  /* font-size: 6.4vw; */
  /* padding: 0 8vw */
}

.container p {
  padding: 1.3333vw 0;
}

.rule {
  /* color: #ffffff; */
  position: fixed;
  bottom: 14vh;
  right: 9.3333vw;
  width: 24.5333vw;
  height: 5.3333vw;
  background: url(./../images/img/ruleWord.png) no-repeat;
  background-size: 100% 100%;
}

/* mask */
.mask {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;

  background: rgba(0, 0, 0, 0.3);
}

/* 弹窗 */
.know-btn {
  display: inline-block;
  padding: 2vw 16vw;
  background: #e61b14;
  font-size: 3.7333vw;
  color: #ffffff;
  border-radius: 6.6667vw;
}

/*  */
/* .pop-title {
  font-size: 8vw;
  text-align: center;
  padding: 6.4vw 0;
  line-height: 1em;
  color: #df2659;
} */
.pop-box {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);

  -moz-box-sizing: border-box;

  width: 87.4667vw;
  height: 73vh;
  background: #ffffff;

  z-index: 999;
  background: url(../images/img/rule-bg.png) no-repeat;
  background-size: 100% 100%;
}

.paragraph {
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
  top: 13vh;
  width: 80vw;
  height: 50vh;
  text-indent: 2em;
  font-size: 3.7333vw;
  color: #3a3a3a;
  text-align: center;
  overflow-y: auto;
}

.content {
  max-height: 16vw;
  margin-top: 2.6667vw;
  overflow-y: auto;
  box-sizing: border-box;
  padding: 0 6.6667vw;
}

.studing-btn {
  display: inline-block;
  width: 43.3333vw;
  height: 12.4vw;
  background: url(../images/img/btn1.png) no-repeat;
  background-size: 100%;
}

.racing-btn {
  display: inline-block;
  width: 43.3333vw;
  height: 12.4vw;
  background: url(../images/img/btn2.png) no-repeat;
  background-size: 100%;
}

.pop-footer {
  position: absolute;
  bottom: 0vw;
  box-sizing: border-box;
  left: 50%;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
  width: 73.3333vw;
  height: 16.6667vw;
  background: url(./../images/img/okBtn.png) no-repeat;
  background-size: 100% 100%;
}

/* .pop-footer p {
  width: 100%;
  height: 10.1333vw;
  background: #d20e44;
  border-radius: 6.6667vw;
  color: #ffffff;
  text-align: center;
  line-height: 10.1333vw;
  font-size: 4.8vw;
} */