You’re just using the wrong CSS selector. Your p tag is inside a div that has textwidget class. So to do it you need to target that class like this :
.textwidget p{
font-family: sans-serif /* replace 'sans-serif' with your font */
}
You’re just using the wrong CSS selector. Your p tag is inside a div that has textwidget class. So to do it you need to target that class like this :
.textwidget p{
font-family: sans-serif /* replace 'sans-serif' with your font */
}