Theme Colors
Bootstrap includes several predefined button styles, each serving its own semantic purpose, with a few extras thrown in for more control.
Text
.text-primary
.secondary-color
.light-color
.text-muted
.text-dark
.text-white
.success-color
.text-danger
.text-warning
.info-color
.peace-color
.text-opacity-75 (This is 75% opacity primary text)
.text-opacity-50 (This is 50% opacity primary text)
.text-opacity-25 (This is 25% opacity primary text)
Background
Gradient