main header nav>div:nth-child(2) img {
  filter: brightness(0);
}

.backgrounds {
  width: 100%;
  height: 250px;
  margin-top: 17%;
  position: relative;
}

.backgrounds img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5);
}

.backgrounds div {
  width: 100%;
  padding: 0 7%;
  text-align: center;
  position: absolute;
  top: 130px;
  color: white;
}

/*--article--*/

.joins {
  margin: 50px 0 40%;
  padding: 0 7%;
  text-align: center;
}

.joins>p {
  margin-bottom: 40px;
}

.joins .tab-menu {
  margin-bottom: 50px;
  border-bottom: 1px solid #eee;
}

.joins .tab-menu:nth-of-type(1n+2) {
  margin-top: 150px;
}

.joins .tab-menu li {
  padding: 0 10px;
}

.joins .w3-red {
  font-weight: bold;
  line-height: 3rem;
  border-bottom: 2px solid #333;
}

.joins>div {
  text-align: center;
}

.joins #tab1, .joins #tab2, .joins #tab3, .joins #tab4 {
  margin-top: -2px;
}

.joins #tab1 p {
  margin-top: 40px;
}

.joins #tab1 button {
  width: 100%;
  margin: 40px 0 10px;
  line-height: 2.5rem;
}

.joins #tab1 input {
  margin-top: 0;
  background: url('images/common/icon_naver_n.svg') 5% 58% no-repeat;
  background-size: 25px;
}

.joins #tab2 {
  text-align: left;
}

.joins #tab2 h4 {
  margin-bottom: 20px;
  text-align: center;
}

.joins #tab2>input {
  margin: 5px 0 15px;
}

.joins #tab2>div>input {
  margin: 5px 0 15px;
}

.joins #tab2 div span {
  margin-left: 5px;
}

.joins #tab2 div:nth-of-type(2) button {
  width: 60%;
}

.joins #tab2 div:nth-of-type(3), .joins>div div:nth-of-type(4), .joins>div div:nth-of-type(5), .joins>div div:nth-of-type(6) {
  font-size: 0.9rem;
  line-height: 2.5rem;
}

.joins #tab2 div:nth-of-type(3) {
  padding-bottom: 12px;
  border-bottom: 1px solid #eee;
}

.joins #tab2 div:nth-of-type(3) p {
  margin: 15px 0 -5px;
}

.joins #tab2 div:nth-of-type(4) {
  margin-top: 12px;
}

.joins #tab2>input:last-of-type {
  margin-top: 30px;
}

.joins #tab3 h4 {
  margin-bottom: 30px;
}

.joins #tab3 p {
  margin: 30px 0;
}

.joins #tab3 button {
  width: 100%;
  margin: 0;
}

.joins #tab3 input {
  margin-top: 10px;
}

.joins #tab4 img {
  width: 90px;
  margin: 20px 0;
}

.joins #tab4 p {
  margin: 30px 0;
}

.joins #tab4 button, .joins #tab4 input {
  width: 49%;
  margin: 0;
  padding: 0;
  line-height: 3rem;
}

@media screen and (min-width:1366px) {
  main header {
    height: 100px;
  }

  main header>div:first-child {
    height: 100px;
    background: white;
    border-bottom: 1px solid #ebe1d7;
  }

  main header nav {
    background: white;
    border-bottom: 1px solid #ebe1d7;
  }

  .backgrounds {
    width: 100%;
    height: 600px;
    margin-top: 0;
  }

  .backgrounds div {
    width: 100%;
    text-align: center;
    position: absolute;
    top: 450px;
  }

  .boxs {
    margin: 0 auto;
  }

  .joins .tab-menu {
    margin-bottom: 0;
  }

  .joins {
    margin: 80px auto 200px;
    padding: 0;
  }

  .joins .tab-menu {
    width: 600px;
    margin: 0 auto;
  }
}