vcmani on "[Theme: Circumference Lite] Menu Size differs when scroll down and go up"

Dear Sir,
Every thing was corrected with your reply and pass answers. Entire website is finished. Still only one problem in my site.
1. menu height size has to adjust.
2. when we came to my website menu looks normal and then scroll down and came up menu height look increased.
Please me to Solve this problem
i am using custom css below css i used for costumise

#cir-banner {
min-height: auto;
}

span.cir-search-bottom {
display: none;
}

#menu-primary-menu.nav-menu {
color: #86bc42;
font-size: 18px;
font-weight: normal;
width: 800px;
}
.nav-menu li a:hover {
color: #86bc42;
font-weight: normal;
}
ul.nav-menu ul a:hover, .nav-menu ul ul a:hover, .nav-menu .current_page_item > a, .nav-menu .current_page_ancestor > a, .nav-menu .current-menu-item > a, .nav-menu .current-menu-ancestor > a {
color: #86bc42;
background-color: #ffffff;
}
.col-md-5 {
padding: 10px;
width: 310px;
}