ashishr

This is contents of the style.css

@import url(‘../twentytwelve/style.css’);

.main-navigation {
position: relative;
}
.main-navigation div {
margin: 0 auto;
margin-right: -40px;

}
.main-navigation ul.nav-menu,
.main-navigation div.nav-menu > ul {
border: none;
background: #655643;
}

Please help !

I created a child theme for twenty twelve and I was modifying the same.

Well I was modifying the style.css child theme.