Box Model

div {
    width: 100px;
    border: 1px solid red;
}

div p {
    border: 1px solid red;
    text-align: center;
}
        

Single Value

 
div {
    padding: 10px;
}        
                

Double Values

 
div {
    padding: 10px 20px;
}        
                

Triple Values

 
div {
    padding: 10px 20px 0;
}        
                

Four Values

 
div {
    padding: 0px 10px 20px 30px;
}