.header-box {
  background-color: #fff;
  box-shadow: 0 2px 2px #3f5c6e26;
  height: 3.75rem;
  left: 0;
  position: fixed;
  top: 0;
  transform: translateZ(0);
  width: 100%;
  z-index: 125;
}

.header {
  background-color: #fff;
  height: 3.75rem;
  position: relative;
  z-index: 125;
  margin-left: auto !important;
  margin-right: auto !important;
  max-width: 1220px;
  display: flex;
}
.main-nav {
  margin-left: 30px;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0 15px;
}

.nav-item a {
  color: #333;
  text-decoration: none;
  font-size: 16px;
  padding: 5px 0;
}

.nav-item a:hover,
.nav-item a.active {
  color: #ff6b00;
  border-bottom: 2px solid #ff6b00;
}