* {
  margin: 0;
  padding: 0;
  color: #2c3e50;
}
.bx {
  width: 1200px;
  margin: 0 auto;
}
#header-box {
  width: 100%;
  height: 60px;
  box-shadow: 0 2px 8px 0 #cccccc;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 999;
  background-color: #ffffff;
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-content .company-name {
  font-size: 22px;
  font-weight: bold;
  cursor: pointer;
}
.header-nav {
  display: flex;
  align-items: center;
}
.header-nav .header-nav-item {
  margin-left: 30px;
  line-height: 60px;
}
.header-nav .header-nav-item.active a{
  color: #3eb2bf;
  line-height: 60px;
}
.header-nav .header-nav-item a{
  text-decoration: none;
}
.header-nav .header-nav-item a:hover {
  color: #3eb2bf;
}
#footer-box {
  background-color: #212224;
  padding: 30px 0;
}
#footer-box p {
  text-align: center;
  color: #ffffff;
  line-height: 32px;
}