CSS Math Functions
The CSS math functions
allow mathematical expressions to be used as property values. Here, we will
explain the calc(), max() and min() functions.
The calc() Function
The calc() function
performs a calculation to be used as the property value.
CSS Syntax
calc(expression)
|
Value |
Description |
|
expression |
Required. A mathematical
expression. The result will be used as the value. |
Let us look at an example:
Example
Use
calc() to calculate the width of a <div> element:
#div1 {
position: absolute;
left: 50px;
width: calc(100% - 100px);
border: 1px solid black;
background-color: yellow;
padding: 5px;
}
The max() Function
The max() function
uses the largest value, from a comma-separated list of values, as the property
value.
CSS Syntax
max(value1, value2, ...)
|
Value |
Description |
|
value1, value2, ... |
Required. A list of
comma-separated values - where the largest value is chosen |
Let us look at an example:
Example
Use max()
to set the width of #div1 to whichever value is largest, 50% or 300px:
#div1 {
background-color: yellow;
height: 100px;
width: max(50%, 300px);
}
The min() Function
The min() function
uses the smallest value, from a comma-separated list of values, as the property
value.
CSS Syntax
min(value1, value2, ...)
|
Value |
Description |
|
value1, value2, ... |
Required. A list of
comma-separated values - where the smallest value is chosen |
Let us look at an example:
Example
Use min()
to set the width of #div1 to whichever value is smallest, 50% or 300px:
#div1 {
background-color: yellow;
height: 100px;
width: min(50%, 300px);
}
All CSS Math Functions
|
Function |
Description |
|
calc() |
Allows you to perform
calculations to determine CSS property values |
|
max() |
Uses the largest value,
from a comma-separated list of values, as the property value |
|
min() |
Uses the smallest value,
from a comma-separated list of values, as the property value |
