Single post in Site Skins: How-To, and Helpful CSS

If the background is a color/css gradient, you can use rgba to set a semi-transparent background color. If it's an image, things get a bit more complicated. Example: [css=background-color: rgba(255,255,255,0.5); padding:10px;] This is a 50% opaque white background [/css] rgba(RED,GREEN,BLUE,OPACITY) More info here There's converters online to change hex codes into rgb codes if you need to do that