.ifa-wrap { position: relative; display: inline-block; max-width: 100%; }
.ifa-wrap audio { width: 100%; height: 40px; outline: none; }
.ifa-wrap .ifa-unlock {
  position: absolute; right: 8px; bottom: 8px;
  display: none; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 999px; border: none;
  background: rgba(0,0,0,0.6); color: #fff; font-weight: 700;
  cursor: pointer; line-height: 1; transition: transform .15s ease;
}
.ifa-wrap .ifa-unlock:hover { transform: scale(1.05); }