Unstyled navbar in different page - html

Question

When linking another page for a second navbar shows it's inner code and I'm working with WordPress right now. I have deleted all background colors cause it's harder to understand the CSS code.
Site - http://qweqwe.co.nf/
Linking another page in process:
Here is how navbar is looks like
.site-header {
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fefefe', endColorstr='#edeee8', GradientType=0);
/* IE6-9 */
box-shadow: 0px 0px 10px #999;
border-bottom:solid 5px #686868;
min-width: 960px;
}
.main-navigation {
width: 960px;
margin: 0 auto;
}
.nav-menu {
margin: 0;
padding: 0;
list-style: none;
text-transform: uppercase;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fefefe', endColorstr='#edeee8', GradientType=0);
/* IE6-9 */
padding: 1.5rem 0 0 482px;
}
.nav-menu > li {
display: inline-block;
margin-right: -4px;
}
.nav-menu li {
background:url(http://qwe.qwe/wp-content/uploads/2015/11/sting.png);
background-position:top right;
background-repeat: no-repeat;
}
.nav-menu li:nth-child(4) {
background:none;
}
.nav-menu li:nth-child(5) {
background:none;
}
.nav-menu ul:nth-child(2) li {
background:url(http://qwe.qwe/wp-content/uploads/2015/11/sting_.png);
background-position:right;
background-repeat: no-repeat;
}
.nav-menu ul:nth-child(2) li:last-child {
background:none
}
.nav-menu a {
display: block;
margin-left: -1px;
padding: 6px 10px 21px 10px;
font-size: 13px;
font-size: 1.3rem;
text-decoration: none;
color: #333;
color: hsl(0, 0%, 21%);
font-family:'HeliosCondC', serif;
font-weight: bold;
}
.nav-menu .current_page_item > a, .nav-menu .current-menu-item > a, .nav-menu .current_page_item > a:hover .nav-menu .sub-menu li a, .nav-menu .current-menu-item > a:hover .nav-menu .sub-menu li a {
background: #686868;
color: white;
border-radius: .5rem .5rem 0 0;
}
.nav-menu .sub-menu {
position: absolute;
left: 0;
margin: 0;
padding:0 0 0 46rem;
width: 100%;
z-index: 1;
}
.nav-menu .sub-menu li {
float: left;
list-style: none;
}
.nav-menu .sub-menu li a:hover {
color:#fff;
}
.nav-menu .sub-menu {
visibility: hidden;
}
.nav-menu .sub-menu a {
font-size: 12px;
margin-bottom: -1px;
color: #fff;
font-weight: 300;
text-transform: none;
list-style: none;
color:#777;
padding: 2rem;
}
.nav-menu .sub-menu .current_page_item > a, .nav-menu .sub-menu .current-menu-item > a, .nav-menu .sub-menu > a:hover, .nav-menu .sub-menu > a:hover {
background: inherit;
color: white;
}
.nav-menu li:hover .sub-menu {
visibility: visible;
}
.nav-menu .current_page_item ul, .nav-menu .current-menu-item ul, .nav-menu ul:hover, .nav-menu ul:hover {
visibility: visible;
}