.box-hover ul li a:not(.tag)::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  position: absolute;
  bottom: 0;
  left: 0;
  transform-origin: bottom left;
  background-color: #45505A;
  will-change: transform;
  transform: scaleX(0);
  transition: transform 350ms cubic-bezier(0.230, 1.000, 0.320, 1.000);
}
.box-hover ul li a:hover::before {
  transform: scaleX(1);
}