.btn-back-cv {
  display: block;
  position: relative;
  width: 56px;
  height: 56px;
  padding: 1rem;
  margin: 20px 0 0 65px;
  overflow: hidden;
  outline: none;
  background-color: #000;
  border-radius : 50%;
  cursor: pointer;
  border: 0;
}

.btn-back-cv:before,
.btn-back-cv:after {
  content: "";
  position: absolute;
  border-radius: 50%;
  inset: 7px;
}

.btn-back-cv:before {
  border: 4px solid #f0eeef;
  transition: opacity 0.4s cubic-bezier(0.77, 0, 0.175, 1) 80ms,
    transform 0.5s cubic-bezier(0.455, 0.03, 0.515, 0.955) 80ms;
}

.btn-back-cv:after {
  border: 4px solid #F08A5D;
  transform: scale(1.3);
  transition: opacity 0.4s cubic-bezier(0.165, 0.84, 0.44, 1),
    transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  opacity: 0;
}

.btn-back-cv:hover:before,
.btn-back-cv:focus:before {
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 0.4s cubic-bezier(0.165, 0.84, 0.44, 1),
    transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-back-cv:hover:after,
.btn-back-cv:focus:after {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.4s cubic-bezier(0.77, 0, 0.175, 1) 80ms,
    transform 0.5s cubic-bezier(0.455, 0.03, 0.515, 0.955) 80ms;
}

.btn-back-cv-box {
  display: flex;
  position: absolute;
  top: 0;
  left: 0;
}

.btn-back-cv-elem {
  display: block;
  width: 20px;
  height: 20px;
  margin: 17px 18px 0 18px;
  transform: rotate(180deg);
  fill: #f0eeef;
}

.btn-back-cv:hover .btn-back-cv-box,
.btn-back-cv:focus .btn-back-cv-box {
  transition: 0.4s;
  transform: translateX(-56px);
}

@media (max-width: 600px){
    .btn-back-cv {
      margin-left:9px;
    }
}