* {
  padding: 0;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}
html {
  height: 100%;
  font-size: 12px;
}

.only-pc {
  display: block;
}
.only-mb {
  display: none;
}

body {
  width: 100%;
  height: 100%;
  background: url("./bg.png") no-repeat;
  background-size: 100% 100%;
  background-color: black;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-container {
  width: 50%;
  height: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.err-img {
  width: 100%;
  height: auto;
  max-width: 500px;
}

.err-title {
  width: 100%;
  text-align: center;
  font-weight: Bold;
  font-size: 32px;
  color: #333333;
  margin-top: 18px;
}

.err-text {
  font-size: 18px;
  color: #666666;
  text-align: center;
  width: 100%;
  margin-top: 12px;
}

.back-btn {
  width: 198px;
  height: 51px;
  background-image: linear-gradient(180deg, #FFAF28 2%, #FF8200 99%);
  box-shadow: 0 0 10px 0 rgba(255,139,0,0.50);
  border-radius: 25.5px;
  font-weight: bold;
  font-size: 20px;
  color: #FFFFFF;
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}


@media screen and (max-width: 500px) {
  .err-img {
    max-width: 100%;
  }
  
}

@media screen and (max-width: 1000px) {
  .page-container {
    width: 80%;
  }
}

@media screen and (max-width: 750px) {
  .only-pc {
    display: none;
  }
  .only-mb {
    display: block;
  }
  body {
    background: #1C042E no-repeat;
  }
  .err-title {
    font-size: 20px;
    margin-top: 48px;
    color: #FFFFFF;
  }
  .err-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
  }
  .back-btn {
    font-size: 16px;
    width: 149px;
    height: 40px;
    background-image: linear-gradient(0deg, #810D7F 0%, #6A23A1 100%);
    box-shadow: 0 0 10px 0 #401263;
    border-radius: 23px;
  }
}