.icon {
  text-decoration: none;
  position: relative;
  text-decoration: none;
}

.icon:before {
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  line-height: 1;
  text-transform: none !important;
  font-family: "Font Awesome 5 Free";
  font-weight: 400;
}

.icon.solid:before {
  font-weight: 900;
}

.icon.brands:before {
  font-family: "Font Awesome 5 Brands";
}

.icon:before {
  line-height: inherit;
}

.icon > .label {
  display: none;
}

.highnav {
  height: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.highnav ul {
  list-style-type: none;
  display: flex;
  padding: 0;
  margin-bottom: 0;
}

.highnav a {
  position: relative;
  display: inline-block;
  color: #ffffff;
  width: 1em;
  height: 1em;
  line-height: 0.9em;
  font-size: 2.5em;
  margin: 0 0.25em 0 0.25em;
  opacity: 0.35;
  outline: 0;
  -moz-transition: opacity 0.25s ease-in-out;
  -webkit-transition: opacity 0.25s ease-in-out;
  -ms-transition: opacity 0.25s ease-in-out;
  transition: opacity 0.25s ease-in-out;
}

.highnav a.icon:before {
  padding-right: 0;
}

.highnav a:before {
  font-size: 0.8em;
}

/* 호버했을때 아래에 뜨는 네모 창 */
.highnav a span {
  display: block;
  position: absolute;
  background: #222222;
  color: #ffffff;
  bottom: -2.75em;
  font-size: 0.3em;
  height: 2.25em;
  line-height: 2.25em;
  text-align: center;
  left: 70%;
  opacity: 0;
  -moz-transition: opacity 0.25s ease-in-out;
  -webkit-transition: opacity 0.25s ease-in-out;
  -ms-transition: opacity 0.25s ease-in-out;
  transition: opacity 0.25s ease-in-out;
  /* 4.0 > 4.5 */
  width: 4.5em;
  margin-left: -2.75em;
}

/* 박스 아래에 생기는 세모 */
.highnav a span:after {
  content: "";
  display: block;
  position: absolute;
  top: -0.4em;
  left: 45%;
  transform: rotateX(180deg);
  margin-left: -0.6em;
  border-top: solid 0.6em #222222;
  border-left: solid 0.6em transparent;
  border-right: solid 0.6em transparent;
}

.highnav a:hover {
  opacity: 1;
}

.highnav a:hover span {
  opacity: 1;
}

.highnav a.active {
  opacity: 1;
}

.highnav a.active:after {
  border-bottom-width: 0.5em;
}

@media screen and (max-width: 980px) {
  .highnav a span {
    display: none;
  }
}