css reset file

html, body, div, span, object, blockquote, pre,
abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center, dl, dt, dd, fieldset, form, label, legend,
caption, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
    background: transparent;
}

p {
    border: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
    background: transparent;
}
a {
    margin: 0;
    padding: 0;
    font-weight: normal;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    padding: 0;
    border: 0;
    vertical-align: baseline;
    background: transparent;
}

body {
    line-height: inherit;
}

body table {
    margin: 0;
    padding: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
    background: transparent;
}

/* remember to highlight insertions somehow! */
ins {
    text-decoration: none;
}
del {
    text-decoration: line-through;
}

/* tables still need 'cellspacing="0"' in the markup */
body table {
    border-collapse: collapse;
    border-spacing: 0;
}

择自：http://programming4.us/mobile/1284.aspx