<nav class="radikalwp-nv-side"><a href="#" class="radikalwp-nv-side-on">⌂<//a><a href="#">▤<//a><a href="#">✉<//a><a href="#">⚙<//a><a href="#">?<//a><//nav>

.radikalwp-nv-side {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 8px;
  background: #0f172a;
  border-radius: 16px;
}
.radikalwp-nv-side a {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  color: #64748b;
  text-decoration: none;
  font-size: 16px;
  transition: all .22s ease;
}
.radikalwp-nv-side a:hover { color: #e2e8f0; background: rgba(255, 255, 255, .07); }
.radikalwp-nv-side a::after {
  content: attr(title);
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  padding: 5px 11px;
  font-size: 10.5px;
  white-space: nowrap;
  color: #fff;
  background: #1e293b;
  border-radius: 7px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}
.radikalwp-nv-side a:hover::after { opacity: 1; }
.radikalwp-nv-side-on { color: #fff !important; background: #4f46e5 !important; box-shadow: 0 0 16px rgba(79, 70, 229, .5); }