.error404 {
  display: flex;
  flex-direction: column;
}
.error404 .spHeader {
  min-height: 16vw;
}

.section-404 {
  display: flex;
  align-items: center;
  flex-grow: 1;
}
.section-404__inner {
  margin-right: auto;
  margin-left: auto;
  line-height: 1.8;
}
.section-404__inner-title {
  padding-top: 73px;
  letter-spacing: 0.1em;
  line-height: 1;
  text-align: center;
}
.section-404__inner-message {
  margin: 0;
  font-size: 16px;
  padding: 12px 20px 34px;
  display: inline-block;
  text-align: left;
}
.section-404__inner .button-liner {
  margin-bottom: 80px;
}
@media only screen and (min-width: 768px) {
  .section-404__inner-message {
    text-align: center;
    padding: 28px 20px 44px;
  }
}
@media only screen and (max-width: 767px) {
  .section-404__inner-title {
    padding-top: 90px;
  }
  .section-404__inner .button-liner {
    margin-bottom: 50px;
  }
}