#go-back-btn {
  cursor: pointer;
  position: fixed;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  height: 40px;
  width: 40px;
  left: 50px;
  top: 20px;
  background-color: #eee;
  border-radius: 50%;
  -webkit-transform: rotateZ(-90deg);
      -ms-transform: rotate(-90deg);
          transform: rotateZ(-90deg);
  -webkit-transition: background-color 0.4s, left 0.4s;
  -o-transition: background-color 0.4s, left 0.4s;
  transition: background-color 0.4s, left 0.4s;
}
#go-back-btn:hover {
  background-color: #232323;
  left: 43px;
}
#go-back-btn svg {
  fill: #121212;
  height: 20px;
  width: 20px;
  margin-top: 0px;
  -webkit-transition: fill 0.4s, margin 0.4s;
  -o-transition: fill 0.4s, margin 0.4s;
  transition: fill 0.4s, margin 0.4s;
}
#go-back-btn:hover svg {
  fill: #FF8C69;
  margin-top: -2px;
}
#go-up-btn {
  opacity: 0;
  cursor: pointer;
  position: fixed;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  height: 50px;
  width: 50px;
  background-color: #eee;
  bottom: 50px;
  right: -50px;
  border-radius: 50%;
  -webkit-transition: background-color 0.4s, opacity 0.4s, bottom 0.4s, right 0.4s;
  -o-transition: background-color 0.4s, opacity 0.4s, bottom 0.4s, right 0.4s;
  transition: background-color 0.4s, opacity 0.4s, bottom 0.4s, right 0.4s;
}
#go-up-btn.active {
  opacity: 1;
  right: 50px;
}
#go-up-btn.active:hover {
  background-color: #fff;
  bottom: 60px;
}
#go-up-btn img {
  height: 20px;
  width: 20px;
  margin-top: -3px;
}
.cases_case-descr {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  color: #fff;
}
.cases_case-descr h1, .cases_case-descr h2, .cases_case-descr h3 {
  margin-top: 0;
  margin-bottom: 15px;
  text-transform: uppercase;
  text-align: center;
}
.cases_case-descr ul {
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}
.cases_case-img-block {
  color: #fff;
  text-transform: uppercase;
  text-align: center;
  -ms-flex-line-pack: center;
  align-content: center;
}
.cases_case-img-block img {
  width: 80vw;
  margin: 10px 0 30px 0;
}
.cases_switch-case-block {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin: 20px;
}
.cases_prevnext-btn {
  position: relative;
  -webkit-transition: 0.3s;
  -o-transition: 0.3s;
  transition: 0.3s;
  background-color: #eee;
  height: 30px;
  width: 30px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.cases_prevnext-btn:hover {
  background-color: #fff;
}
.cases_prevnext-btn img {
  height: 15px;
  width: 15px;
}
.cases_prevnext-btn h4 {
  color: #121212;
  -webkit-transition: 0.2s;
  -o-transition: 0.2s;
  transition: 0.2s;
  opacity: 0;
  position: absolute;
  margin-top: 18px;
}
.cases_prevnext-btn:hover h4 {
  opacity: 1;
}
.cases_prevnext-btn.prev-btn {
  margin-right: 20px;
}
.cases_prevnext-btn.prev-btn h4 {
  left: 26px;
}
.cases_prevnext-btn.prev-btn:hover {
  margin-right: 30px;
  padding-right: 50px;
}
.cases_prevnext-btn.prev-btn img {
  -webkit-transform: rotateZ(-90deg);
  -ms-transform: rotate(-90deg);
  transform: rotateZ(-90deg);
}
.cases_prevnext-btn.next-btn {
  margin-left: 20px;
}
.cases_prevnext-btn.next-btn img {
  -webkit-transform: rotateZ(90deg);
  -ms-transform: rotate(90deg);
  transform: rotateZ(90deg);
}
.cases_prevnext-btn.next-btn h4 {
  right: 26px;
}
.cases_prevnext-btn.next-btn:hover {
  margin-left: 30px;
  padding-left: 50px;
}
@media all and (max-width: 1024px) {
  #go-back-btn {
    position: absolute;
    left: 25px;
  }
  #go-back-btn:hover {
    left: 21px;
  }
  .cases_case-descr h1 {
    font-size: 24px;
  }
  .cases_case-descr h2 {
    font-size: 20px;
  }

}
@media all and (max-width: 767px) {
  .cases_case-descr h1 {
    font-size: 20px;
  }
  .cases_case-descr h2 {
    font-size: 18px;
  }
  .cases_case-descr h3 {
    font-size: 17px;
  }

}