Photo credit: Danika Bannasch, UC Davis. Hereditary equine regional dermal asthenia (HERDA) is a genetic skin disease found in the Quarter Horse. The disease is characterized by hyperextensible, elastic skin, severe dermatologic lesions, and often scarring along the back and withers of affected horses.
Contents. 1  Introduction to style sheets. 2  Adding style to HTML Setting the default style sheet language. 3  External style sheets Preferred and alternate style sheets.  Cascading style sheets Media-dependent 1  cascades. Hiding style data from user agents.  Linking to style sheets with HTTP headers.
HTML Codes. HTML is the markup language of the web. If you need to add something to your blog or website, chances are you'll need to write some HTML code. Here are links to free HTML codes. You can copy and paste these codes into your website or blog. With these HTML codes, the hard work has already been done for you. All you need to do is copy/paste, or copy/modify/paste.