body {
  margin: 0;
  padding: 0;
}

#sidenav-main .icon{
  position: relative !important;
}

#sidenav-main .active i {
    color: #ffffff !important;
}
#sidenav-main i {
  inset: auto !important;
  color: #344767;
  position: absolute !important;
  font-size: 22px !important;
}


.envelope {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  z-index: 1000;
  opacity: 0;
  pointer-events: none; /* evita interação */
}

.envelope.show {
  animation: flyUp 2s ease-out forwards;
  opacity: 1;
}

@keyframes flyUp {
  0% {
    transform: translate(-50%, -50%) scale(0) rotate(0deg);
    opacity: 0;
  }
  30% {
    transform: translate(-50%, -50%) scale(1.2) rotate(10deg);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -200%) scale(0.5) rotate(45deg);
    opacity: 0;
  }
}