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

.sitemap {
  width: 692px;
  margin: 50px auto;
}
.sitemap a {
  color: #000;
  text-decoration: none;
  display: inline-block;
  text-transform: uppercase;
  margin: 0 5px;
  border-radius: 7px;
  text-align: center;
  position: relative;
}

.first > li > a {
  background: #b4b5b4;
  width: 150px;
  height: 70px;
  line-height: 70px;
  display: block;
  margin: auto;
}
.first > li > a:after {
  content: "";
  position: absolute;
  left: 50%;
  width: 1px;
  height: 10px;
  background: #9e9f9e;
  top: 100%;
}

.second {
  padding-top: 20px;
  margin-left: 10.5%;
}
.second > li {
  display: inline-block;
  vertical-align: top;
}
.second a {
  background: #cbcccb;
  font-size: 14px;
  width: 125px;
  height: 50px;
  line-height: 50px;
  z-index: 10;
}
.second a:before {
  content: "";
  position: absolute;
  border: 1px solid #9e9f9e;
  border-left: none;
  border-bottom: none;
  height: 9px;
  top: -10px;
  left: -76px;
  width: 139px;
}
.second li:first-child a:before {
  border-top: none;
}

.third {
  margin-left: 16px;
  padding-top: 20px;
}
.third a {
  background: #e4e4e3;
  width: 100px;
  height: 40px;
  line-height: 40px;
  margin-bottom: 10px;
  z-index: 5;
  font-size: 10px;
}
.third a:before {
  border: 1px solid #9e9f9e;
  border-right: none;
  border-top: none;
  height: 55px;
  top: -35px;
  left: -8px;
  width: 7px;
}
.frstab
{
	font-size: 27px !important;
    line-height: 66px !important;
    color: #fff !important;
    background-color: #781500 !important;
}
.scndtab
{
	font-size: 20px !important;
    line-height: 48px !important;
    color: #fff !important;
    background-color: #781500 !important;
}
.subtab
{
	background-color: #007bff !important;
    font-size: 18px !important;
    color: #fff !important;
}