.away {
  padding: 20px 20px 35px;
  line-height: 160%;
  text-align: center;
  background: #fff;
}
.away-wrapper {
  margin: 50px auto;
}
.away__header {
  margin-bottom: 7px;
  font-weight: 700;
}
.away__browsers {
  padding: 20px 24px;
}
.away__browser {
  display: inline-block;
  margin: 0 10px;
  padding: 20px 20px 15px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 14px;
  transition: background-color 0.3s;
}
.away__browser:hover {
  background: #fafafa;
}
.away__browser-ico {
  display: block;
  margin-bottom: 10px;
  width: 80px;
  height: 80px;
  background-image: url(../img/browsers.png);
}
.away__browser-ico.atom {
  background-position: 0 -400px;
}
.away__browser-ico.chrome {
  background-position: 0 -160px;
}
.away__browser-ico.firefox {
  background-position: 0 -80px;
}
.away__browser-ico.opera {
  background-position: 0 -240px;
}

.error-page {
  display: flex;
  z-index: 9999999999;
  position: relative;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  padding: 1rem;
  color: var(--clr-text);
  line-height: 1;
  text-align: center;
  background-color: #fff;
}
.error-page__title {
  margin-bottom: 1.8rem;
  color: var(--clr-accent);
  font-weight: bold;
  font-size: min(7.5em, 16vw);
}
.error-page__description {
  font-weight: 500;
  font-size: min(1.6em, 6vw);
}

.pageup {
  display: block;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  z-index: 90;
  position: fixed;
  right: 3vw;
  bottom: 3vw;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  cursor: pointer;
  background: var(--clr-accent);
  transition: opacity 0.3s, visibility 0.3s, bottom 0.3s;
}
.pageup:hover::after {
  opacity: 0.08;
}
.pageup:active::after {
  opacity: 0.1;
}
.pageup.is-active {
  opacity: 1;
  visibility: visible;
  bottom: 4.6vw;
}
.pageup::after {
  display: block;
  opacity: 0;
  z-index: 0;
  position: absolute;
  content: "";
  background: #000;
  transition: opacity 0.3s;
  inset: 0;
}
.pageup:before {
  display: block;
  z-index: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1em;
  height: 1em;
  margin-top: -0.3em;
  margin-left: -0.5em;
  border-top: solid 0.19em #fff;
  border-left: solid 0.19em #fff;
  content: "";
  transform: rotate(45deg);
  transform-origin: center;
}