Could it be because of a regular syntax error or could it be because list-style-type:none is stopping it from deleting the margin?
Are there further enhancements I can make to my code here, as I am not an expert at this yet?

My code is the following:
#nav {
background:gray;
float:left;
padding:0px 0px 60px 0px;
width:26.3%;
margin:0px;
}

#nav ul {
margin:0px;
}

#nav ul li {
color:white;
list-style-type:none;
margin:38px 0px 38px 0px;
font-weight:bold;

}

#nav ul li a {
background:black;
color:white;
padding:15px 10px 15px 0px;
margin:0px;

}