CSS: nth Selector

Question

To select the last 3 element of the div

div:nth-last-child(3) { 
background: #000000;
}

The syntax of pseudo-elements:

selector::pseudo-element {
property:value;
}

Answer 1

Change every third element's style

.home-activity .recent-activity-item:nth-child(3n+3) {  
    margin-right: 0;
}