.icons {
  margin: 0;
  padding: 0;
  display: flex;
 /* position: absolute;*/
  top: 100%;
  left: 100%;
/*  transform: translate(-50%, -50%);*/

  position:static;
  transform:  translate(-25%, 10%);
}
.icons li {
  list-style: none;
  margin: 0 10px;  /*Separación*/
}
.icons li a {
  position: relative; 
  display: block;
  width: 45px;
  height: 45px;
  text-align: center;
  line-height: 40px;
  background: #333;
  border-radius: 100%;
  font-size: 30px;
  color: #666;
  transition: .5s;
}
.icons li a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #4b57fe;
  transition: .5s;
  transform: scale(.9);
  z-index: -1;
}
.icons li a:hover::before {
  transform: scale(1.1);
  box-shadow: 0 0 15px #4b57fe;
}
.icons li a:hover {
  color: #4b57fe;
  box-shadow: 0 0 5px #4b57fe;
  text-shadow: 0 0 5px #4b57fe;
}