<nav>
<ul>
<li><a href="#about">О компании</a></li>
<li><a href="#portfolio">Портфолио</a></li>
<li><a href="#services">Услуги</a></li>
<li><a href="#gallery">Галерея</a></li>
<li><a href="#contact">Контакты</a></li>
<li><a href="#">eeee</a></li>
</ul>
</nav>
#logo{float:left;font-size:25px;text-transform:uppercase;color:#fffab2;font-weight:600;text-decoration:none;padding:11px 0}
#logo1{float:right;font-size:25px;text-transform:uppercase;color:#fffab2;font-weight:600;text-decoration:none;padding:11px 0}
nav{width:auto;float:right;margin-top:7px}
nav ul{display:table;float:right;margin:0;padding:0}
nav ul li{float:left;list-style-type:none}
nav ul li:last-child{padding-right:0}
nav ul li a{color:#e4f2ff;font-size:19px;padding:7px 19px;display:inline-block;text-decoration:none}
nav ul li a:hover{background-color:#143a06;color:#fff9c8;text-decoration:underline}
input[type=checkbox],label{display:none}
@media only screen and (max-width: 980px) {
header{padding:20px 0}
#logo{padding:0}
input[type=checkbox]{position:absolute;top:-9999px;left:-9999px;background:none}
input[type=checkbox]:fous{background:none}
label{float:right;display:inline-block;cursor:pointer;margin-right:65px}
input[type=checkbox]:checked ~ nav{display:block}
nav{display:none;position:absolute;right:0;top:50px;background-color:#002e5b;padding:0;z-index:99}
nav ul{width:auto}
nav ul li{float:none;padding:0;width:100%;display:table}
nav ul li a{color:#FFF;font-size:15px;padding:10px 20px;display:block;border-bottom:1px solid rgba(225,225,225,0.1)}
}
@media only screen and (max-width: 360px) {
label{padding:5px 0}
#logo{font-size:20px}
nav{top:47px}
}
<nav>
<ul>
<li><a href="#about">О компании</a></li>
<li><a href="#portfolio">Портфолио</a></li>
<li><a href="#services">Услуги</a></li>
<li><a href="#gallery">Галерея</a></li>
<li><a href="#contact">Контакты</a></li>
<li><a href="#">eeee</a></li>
</ul>
</nav>
#logo{float:left;font-size:25px;text-transform:uppercase;color:#fffab2;font-weight:600;text-decoration:none;padding:11px 0}
#logo1{float:right;font-size:25px;text-transform:uppercase;color:#fffab2;font-weight:600;text-decoration:none;padding:11px 0}
nav{width:auto;float:right;margin-top:7px}
nav ul{display:table;float:right;margin:0;padding:0}
nav ul li{float:left;list-style-type:none}
nav ul li:last-child{padding-right:0}
nav ul li a{color:#e4f2ff;font-size:19px;padding:7px 19px;display:inline-block;text-decoration:none}
nav ul li a:hover{background-color:#143a06;color:#fff9c8;text-decoration:underline}
input[type=checkbox],label{display:none}
@media only screen and (max-width: 980px) {
header{padding:20px 0}
#logo{padding:0}
input[type=checkbox]{position:absolute;top:-9999px;left:-9999px;background:none}
input[type=checkbox]:fous{background:none}
label{float:right;display:inline-block;cursor:pointer;margin-right:65px}
input[type=checkbox]:checked ~ nav{display:block}
nav{display:none;position:absolute;right:0;top:50px;background-color:#002e5b;padding:0;z-index:99}
nav ul{width:auto}
nav ul li{float:none;padding:0;width:100%;display:table}
nav ul li a{color:#FFF;font-size:15px;padding:10px 20px;display:block;border-bottom:1px solid rgba(225,225,225,0.1)}
}
@media only screen and (max-width: 360px) {
label{padding:5px 0}
#logo{font-size:20px}
nav{top:47px}
}
<li><a href="#">eeee</a></li>
, оборачивай в класс допустим right_header, <li><div class="right_header"><a href="#">eeee</a></div></li>
.right_header {
float: right;
}