add: css readme

Author: ui2code

css/README.md

@@ -0,0 +1,29 @@
+# CSS Snippets
+
+## Font
+
+### [cssff] @font-face
+
+```css
+@font-face {
+  font-family: "$1";
+  src:url("$2.eot");
+  src:url("$2.eot?#iefix") format('embedded-opentype'),
+      url("$2.woff2") format('woff2'),
+      url("$2.woff") format('woff'),
+      url("$2.ttf") format('truetype'),
+      url("$2.svg#$1") format('svg');
+  font-weight: ${3:400};
+  font-style: normal;
+  font-variant: normal;
+  -webkit-font-smoothing: antialiased;
+}
+
+@media screen and (-webkit-min-device-pixel-ratio:0){
+  @font-face {
+    font-family: "$1";
+    src: url("$2.svg#$1") format('svg');
+    font-weight: ${3:400};
+  }
+}
+```