diff --git a/readme.md b/readme.md
index 74bda55..08ae717 100644
--- a/readme.md
+++ b/readme.md
@@ -57,6 +57,18 @@ Last Child Selector `p:last-child {}`
 
 :nth-child Selector `p:nth-child() {}`
 
+Selector every element that is the first element of its parent `p:first-of-type {}`
+
+Checked elements selector  `input:checked {}`
+
+Disabled elements selector `input:disabled {}`
+
+Enabled elements selector `input:enabled {}`
+
+Selector elements that has no children (including text nodes) `p:empty {}`
+
+Selector all elements that is not a specified element `:not(p) {}`
+
 ###Font Styling
 
 Font style `font-style: normal | italic | oblique`
@@ -110,6 +122,9 @@ Background Color `background-color: #2AA9E0`
 Background Position `background-position: top | right | bottom | left |
 center`
 
+Background Attachment `background-attachment: scroll | fixed | local | initial |
+inherit`
+
 ###Box properties
 
 Margin `margin-top: 2px` `margin-right: 4px | auto` `margin-bottom: 6px`