nav ul {
  list-style: none;
  padding-left: 0;
  margin-top: 0;
  margin-bottom: 0;
}

h1 {
  width: 588px;
  margin: 100px auto 20px;
  color: #f0f0f0;
  text-align: center;
}

.nav {font-family:΢ÈíÑźÚ, Arial, Helvetica, sans-serif;
  width: 588px;
  margin: 0 auto;
  color: #f0f0f0;
}
.nav a {font-family:΢ÈíÑźÚ, Arial, Helvetica, sans-serif;
  display: block;
  padding: 0 14px;
  line-height: inherit;
  cursor: pointer;
}
.nav_menu {font-family:΢ÈíÑźÚ, Arial, Helvetica, sans-serif;
  line-height: 30px;

  text-transform: uppercase;
}
.nav_menu-item {
  display: inline-block;
  position: relative;
}
.nav_menu-item:hover {
  background-color: #A9CEE6;
}
.nav_menu-item:hover .nav_submenu {
  display: block;
}
.nav_submenu {
  font-weight: 300;
  text-transform: none;
  display: none;
  position: absolute;
  width: 160px;
  background-color: #A9CEE6;
}
.nav_submenu-item:hover {
  background: rgba(0, 0, 0, 0.1);
}