.logo{
    display:none;
}
#header{
    height:43px;
}
.user_info{
    top:6px;
}
#navigation{
    top:0px;
}

@media only screen and (max-width: 979px) and (min-width: 768px){
    .user_info{
    top:0px;
    }
}

@media only screen and (max-width: 767px){
    .user_info{
    top:0px;
    }
}