.sitetopbar{
position: fixed;
top:0px;
width: 100%;
height: 48px;
background: #333;
z-index: 999; 
}
.sitetopbar .logo{
    display: inline-block;
    height: 48px;
    background: rgb(204, 14, 14);
    color: #fff;
    padding: 0px 20px;
    line-height: 49px;
    margin-left: 0px;
    font-weight: bold;
    font-size: 18px;
}