Why are cellspacing and cellpadding not CSS styles

问题

I don't know why this bothers me so much, but when I create websites, I always try to do all my styling with CSS. However one thing I always have to remember to do when I'm working with tables is add cellspacing="0" and cellpadding="0"

Why is there not a CSS property to override these antiquated HTML 4 attributes?

回答1:

Cellspacing :

table { border-collapse: collapse; }

As for cellpadding, you can do

table tr td, table tr th { padding: 0; }

回答2:

mat already answered, but just for completeness:

padding → cellpadding
border-spacing → cellspacing
border-collapse → no HTML equivalent

It's also worth remembering that you can set separate horizontal and vertical values for the CSS ones e.g. border-spacing: 0 1px.

回答3:

Eric Myer's reset stylesheet contains the following 'reset' style for table :

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

In addition TD, TR are reset :

thead, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
}

The reason I mention this is that he has a comment 'tables still need cellpadding=0'. I assume he put this in here for a reason - probably needed by some old browsers. Judging by the fact that this is one of the very few comments he included I'm guessing its important and that there's a good reason for it.

Based on this comment - and this comment alone! - i'm continuing to use cellspacing="0" in the markup unless someone tells me definitively (below) why I dont need to. It could however likely be unnecessary in any modern browser worth supporting these days.

回答4:

table { border-collapse:collapse; }

回答5:

I guess somebody considered cell spacing a “bad practice”. How I understand it is equivalent included in CSS2 standard but IE does not support this property. border-collapse allows to set spacing to 0 value. Cell padding may be achieved setting padding property to TD elements of a table.

来源：https://stackoverflow.com/questions/339146/why-are-cellspacing-and-cellpadding-not-css-styles

标签

html

css

html-table

cellpadding

cellspacing