What does this mean?, *confuzzled* Options

[xxANGExx]

Hey, I'm attempting (key word: attempting) to make my first layout and I'm having a little trouble with coding. Can anyone break it down for me? Basically tell me what this bit of coding means?

CODE

<!-- begin code provided by createblog.com -->

<style type="text/css">
#rblEprops, #pnlEnabled table, #pnlEprops table {
width: auto !important;
}
table.header, table.main, table.footer, table.navigation{
/* edit width */
width:265;
}
table.blogbody, div.blogheader, .caption{
width:235;
}
texttable.left, td.mainleft, table.left, table.navigation, table.footer, table.search {
display: none;
}
table.blogbody {
/* edits your blog or entry space */
border: 0px;
background-color:transparent;
padding-top:0px;
padding-right:0px;
}
hr {
color: #D6DC58;
}
div.blogspace {
width:275px;
height:300px;
margin-left:-210px;
margin-top:-375px;
overflow:auto;
background-color:transparent;
scrollbar-Arrow-Color: #ffffff;
scrollbar-Track-Color: #A5B57B;
scrollbar-Shadow-Color: #A5B57B;
scrollbar-Face-Color: #A5B57B;
scrollbar-Highlight-Color: #A5B57B;
scrollbar-darkshadow-color: #A5B57B;
scrollbar-3dLight-Color: #A5B57B;
}
</style>

<!-- end code provided by createblog.com -->

I have a slight idea what it means, but I'm not sure so basically, can anyone clarify it for me? Thanks! <3

[xxANGExx]

What I'm most unsure about is this bit:

CODE

<!-- begin code provided by createblog.com -->

<style type="text/css">
#rblEprops, #pnlEnabled table, #pnlEprops table {
width: auto !important;
}
table.header, table.main, table.footer, table.navigation{
/* edit width */
width:265;
}
table.blogbody, div.blogheader, .caption{
width:235;
}

<!-- end code provided by createblog.com -->

Like what widths they edit and such