From: Mark Otto Date: Sat, 19 Oct 2019 05:32:29 +0000 (+0300) Subject: Doc tweaks. X-Git-Tag: v5.0.0-alpha1~688 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e54d8e1208fbb292d48b879b66d19a404bba538;p=thirdparty%2Fbootstrap.git Doc tweaks. --- diff --git a/site/content/docs/4.3/getting-started/theming.md b/site/content/docs/4.3/getting-started/theming.md index 3fd367efd3..0c5ad09ab3 100644 --- a/site/content/docs/4.3/getting-started/theming.md +++ b/site/content/docs/4.3/getting-started/theming.md @@ -215,9 +215,9 @@ You can also specify a base color with our color map functions: We use the `escape-svg` function to escape the `<`, `>` and `#` characters for SVG background images. These characters need to be escaped to properly render the background images in IE. -## Add and Subtract function +## Add and Subtract functions -We use the `add` and `subtract` functions instead of the CSS `calc` function. The primary purpose of these functions is to avoid errors when "unitless" 0 is given to the `calc` expression. +We use the `add` and `subtract` functions to wrap the CSS `calc` function. The primary purpose of these functions is to avoid errors when a "unitless" `0` value is passed into a `calc` expression. Expressions like `calc(10px - 0)` will return an error in all browsers, despite being mathematically correct. Example where the calc is valid: