/*a:link 指正常的未被访问过的链接；*/
.nav-item a:link {
  text-decoration: none;
}
/*a:hover 指鼠标在链接上； */
.nav-item a:hover {
  font-weight: 600;
  color: #000000;
}

img {
  border: 0;
  max-width: 100%;
}

.bg-fff {
  background: #ffffff;
}

.col-fff {
  color: #ffffff;
}

/* 版心 */
.type-area,
.content-box {
  max-width: 1200px;
  margin: 0 auto;
}

/* 导航 */
.nav-box {
  height: 80px;
  width: 100%;
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 99;
}
.navs {
  width: 100%;
  display: flex;
}
.logo {
  width: 52px;
  height: 60px;
  background-image: url(/assets/image/home-logo.png);
  background-repeat: no-repeat;
  background-size: cover;
  margin-right: 80px;
}
.nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-item a {
  font-size: 18px;
  font-weight: 400;
  color: #333333;
  line-height: 18px;
}
.nav-item-ative a {
  font-weight: 600;
  color: #000000;
}