header {
  position: fixed;
  width: 100%;
  z-index: 12;
  height: 90px;
  -webkit-transition: background-color 0.3s;
  transition: background-color 0.3s;
}
header.is-scrolled {
  background-color: #fff;
}
header .header-felx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  height: 90px;
  width: 100%;
  max-width: 1135px;
  padding: 0 50px;
}
header .header-logo {
  width: 100%;
  max-width: 280px;
}
header .header-nav {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 60%;
          flex: 0 0 60%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
      -ms-flex-pack: end;
          justify-content: flex-end;
  gap: 20px;
}
header .header-nav-list {
  display: block;
  font-size: 18px;
  line-height: 1;
  font-weight: 700;
  color: #3e3a39;
}

@media screen and (max-width: 1350px) {
  header .header-nav-list {
    font-size: 15px;
  }
}
@media screen and (max-width: 1200px) {
  header .header-felx {
    padding: 0 20px;
    -webkit-box-pack: start;
        -ms-flex-pack: start;
            justify-content: flex-start;
    gap: 20px;
  }
  header .header-logo {
    max-width: 200px;
  }
  header .header-nav {
    -webkit-box-flex: unset;
        -ms-flex: unset;
            flex: unset;
    gap: 20px;
  }
  header .header-nav-list {
    font-size: 15px;
  }
}
@media screen and (max-width: 767px) {
  header {
    height: 70px;
  }
  header .header-felx {
    height: 70px;
    padding: 0 18px;
  }
  header .header-logo {
    max-width: 180px;
  }
  header .header-nav {
    display: none;
  }
}