body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #fcfcfc;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
}

.error-con {
  width: 1250px;
  min-height: 500px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  flex: 1;
}

.error-con img {
  width: 480px;
}

.error-text {
  flex: 1;
  padding-left: 100px;
  padding-bottom: 40px;
}

.error-desc {
  font-size: 22px;
  line-height: 34px;
  margin-bottom: 30px;
}

.back-btn {
  display: inline-block;
  vertical-align: middle;
  width: 160px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border-radius: 8px;
  background: #70a3df;
  color: #fff;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: all .3s;
}

.back-btn:hover {
  background: #5e98db;
  color: #fff;
  box-shadow: 0 2px 5px 3px #dedede;
}