header {
    position: fixed; 
    top: 0px; 
    z-index: 599; 
    width: 100%; 
    display:block;
}

#container {
    position: relative; 
    padding: 40px; 
    margin:0 auto;
}

#pixD {
    width: 230px; 
    height: auto;
}

#burgerD {
    float: right; 
    width: 50px; 
    height:auto;
}