rspec/rules/S4650/css/rule.adoc

``++calc++`` is a CSS3 function that provides the possibility to do simple math in CSS (add, subtract, divide, multiply). Without spaces around operators, ``++calc++`` will have no effect.


More precisely, before an operator, there must be a single whitespace or a newline plus indentation. After an operator, there must be a single whitespace or a newline.


== Noncompliant Code Example

----
#div1 {
    position: absolute;
    width: calc(100%- 100px); /* Noncompliant; no space after the % sign */
}
----


== Compliant Solution

----
#div1 {
    position: absolute;
    width: calc(100% - 100px);
}
----



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