Why is an extra pixel added to firefox elements when I use `line-height: 1` in my reset?

I am using this reset.

* {
    font-family: Arial, Helvetica, sans-serif;
    outline: 0;
    padding: 0;
    margin: 0;
    border: 0;
    text-decoration: none;
    vertical-align: baseline;
    white-space: normal;
    line-height: 1;
}
hr {display: none}
blockquote:before, blockquote:after, q:before, q:after {content: ''}
blockquote, q {quotes: "" ""}
ul {list-style-type: none}
ol {list-style-type: decimal}
a {text-decoration: none}

.clear {clear: both}

The problem is that as long as I use the line height: 1 I see an extra pixel that doesn’t disappear no matter what I do in my block links, even if I tried to set the height, line length, font size for It. nothing works. Please tell me what happens with the height of the firefox string.

This is my css.

.tag {
    display: block;
    font-size: 11px;
    background: #fff;
    border: 1px solid #aaa;
    color: #555;
    text-transform: lowercase;
        padding: 3px 6px;
}

Pretty simple huh? No, it seems. Firefox will create a pixel on top of the text, which I can clearly see that it is not balanced, although I set the top and bottom margins. Someone will tell me why this happens if I delete the line height: 1 from my reset there are a lot of troubles.

+3
2

line-height: normal;

, , (, , , line-height:1, , , firefox -).

+3

, , CSS , im firefox 3.6.13

, , JSbin?

http://jsbin.com/ajinu3

0

Source: https://habr.com/ru/post/1780281/


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