text-overflow ellipsis not working multiline code example

Example 1: text-overflow ellipsis multiple lines

p {
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

Example 2: text-overflow: ellipsis; 2 line

display: -webkit-box;
-webkit-line-clamp: 3;
-webkit-box-orient: vertical;
overflow: hidden;
text-overflow: ellipsis;