.nav1 {
  background-color: black;
}
.a1:hover {
  border-bottom: 2px solid;
  transition: all 0.5s;
  background-color: #555;
  transition: height 0.9s ease-in;
}
.dr a {
  color: white;
}
.na img {
  border-radius: 50%;
  width: 70px;
  height: 70px;
}
.na {
  animation: nav-load 300ms ease-in;
}
@keyframes nav-load {
  0% {
    transform: translateY(-100%);
  }

  100% {
    transform: translateY(0);
  }
}
@media (max-width: 770px) {
  .dr {
    background-color: rgba(66, 66, 66, 0.829);
  }
  .lis {
    margin-left: -6rem;
  }
  .ul1 {
    margin-left: -230px;
  }
  .ul1 a {
    border-bottom: 1px solid;
    padding-left: 30px;
  }
  .na a {
    font-size: small;
  }
  .na img {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 350px) {
  .na b {
    font-size: 10px;
    width: 20px;
    height: 20px;
  }
  .head {
    margin-left: 74vw;
  }
  .ser {
    height: 555px;
  }
}
@media (max-width: 991px) {
  .ul1 {
    margin-left: -230px;
  }
  .ul1 a {
    border-bottom: 1px solid;
    padding-left: 30px;
  }
  .a1 {
    padding-left: 30px;
  }
}
@media (max-width: 1300px) {
  .ul1 {
    margin-left: -170px;
  }
}