.sidemenu{
  width: 10px;
  background-color: #B5203B;
  opacity: .5;
  position: fixed;
}

.sidemenu:hover {
  opacity: 1;
}


.sidemenu.open {
  animation: openLeftNavbar .9s forwards;
  opacity: 1;
}

.sidemenu.closed {
  animation: closeLeftNavbar .9s forwards;
}

@keyframes openLeftNavbar {
  0% {
    width: 10px;
    opacity: 0;
  }
  100% {
    width: 350px;
    opacity: 1;
  }
}

@keyframes closeLeftNavbar {
  0% {
    width: 350px;
    opacity: 1;
  }
  100% {
    width: 10px;
    opacity: .5;
  }
}

.arrow-left{
  height: 60px;
  width: 20px;
  background-color: #B5203B;
  position: relative;
  top:50%;
  left: 100%;
  transform: translateY(-50%) translateX(-40%);
  border-top-right-radius: 30%;
  border-bottom-right-radius: 30%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bolder;
  color: white;
  font-size: 25px;
  cursor: pointer;
}


.arrow-left.open{
  opacity: 1;
  transform: rotate(180deg);
  border-top-left-radius: 30%;
  border-bottom-left-radius: 30%;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}