Pokaż strzałkę na zawisie CSS

.button-arrow {
  min-width: 130px;
  height: 40px;
  color: #800020;
  font-size: 20px;
  padding: 10px 15px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  display: inline-block;
  outline: none;
  overflow: hidden;
  border-radius: 5px;
  border: none;
  background-color: #fbfdff;
  text-decoration: none;
}

.button-arrow:hover {
  border-radius: 5px;
  padding-right: 8px;
  padding-left: 24px;
}



.button-arrow:hover:after {
  opacity: 1;
  left: 10px;
}

// Arrow 

.button-arrow:after {
  content: "\00AB";
  position: absolute;
  opacity: 0;
  font-size: 20px;
  line-height: 40px;
  top: 0;
  left: -20px;
  transition: 0.4s;
}
Sparkling Snake