bootstrap gray background code example
Example 1: bootstrap text color
.text-primary
.text-secondary
.text-success
.text-danger
.text-warning
.text-info
.text-light
.text-dark
.text-muted
.text-white
Example 2: bootstrap 4 text color
Text with primary color
Text with secondary color
Text with success color
Text with danger color
Text with warning color
Text with info color
Text with light color
Text with dark color
Text with muted color
Text with white color