Are all elements of the reset necessary? I mean, there are many tags that I almost never use so including all of them adds to the size of the page. What do you think of using just what I need?

Cheers.

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/* reset */
body, h1, h2, h3, h4, h5, h6, p, blockquote, pre, dl, dd, ol, ul, menu, form, fieldset, legend, figure, section, summary { margin: 0; padding: 0; }
article, aside, details, summary, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }
button, fieldset, iframe, img { border: 0; }

when you have a div id=”container” centre aligned (margin:auto; in the css) and you want to push the container div down – by say 20px – to create a bit of space at the top of the page (an actual client request… ) th CSS: margin:auto; then change to margin:20px auto 0 auto;) the body background repeat-x will also jump down with the #container.

fix it by adding a 1px border to the top of the page. stupid i know but that’s browser for you… border-top:#fff 1px solid;margin-top:-1px;

another way to fix this is to remove the background-color:#FFFFFF; from the html rule in the reset(if you have it in there).

ps: this only happens if you have a background color on your html tag in the css which is part of some css reset file available out there.
personally i just removed it but you may need to give your html tag a bg colour.

cheers!