CSS : reset - make all browser have same effect

html, body, h1, h2, h3, h4, h5, h6, p, ol, ul, li, pre, code, address,
variable, form, fieldset, blockquote {
padding: 0;
margin: 0;
font-size: 100%;
font-weight: normal;
}
ol {
margin-left: 1.4em;
list-style: decimal;
}
ul {
margin-left: 1.4em;
list-style:square;
}
img {
border: 0;
}

taked from CSS missing manual book