.down-arrow {
  position: absolute;
  /* top: calc(100vh - 100px); */
  top: 70%;
  left: 50%;
  width: 0;
  height: 30px;
  border: 1px solid;
  border-radius: 0;
  color: #1C355E;
  color: #FFF;
  z-index: 1;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}

.hide-arrow {
  display: none;
}

.down-arrow:after {
  content: " ";
  position: absolute;
  top: 18px;
  left: -50%;
  width: 7px;
  height: 7px;
  border-bottom: 1px solid;
  border-right: 1px solid;
  border-radius: 0;
  -webkit-transform: rotateZ(45deg) translateY(70%);
          transform: rotateZ(45deg) translateY(70%);
}

.down-arrow {
  -webkit-animation: jumpInfinite 1.5s infinite;
          animation: jumpInfinite 1.5s infinite;
}

@-webkit-keyframes jumpInfinite {
  0% {
    margin-top: 0;
  }
  50% {
    margin-top: 20px;
  }
  100% {
    margin-top: 0;
  }
}

@keyframes jumpInfinite {
  0% {
    margin-top: 0;
  }
  50% {
    margin-top: 20px;
  }
  100% {
    margin-top: 0;
  }
}
@media screen and (max-width: 1600px) {
  .down-arrow {
    top: 80%;
  }
}