choose first element in css code example
Example 1: css first element
p:first-child {
font-size: 1.5em;
}
Example 2: select first div css
#content_id div.class_name:first-child {
/*your style*/
}
p:first-child {
font-size: 1.5em;
}
#content_id div.class_name:first-child {
/*your style*/
}