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.
March 31, 2015. HTML stands for hypertext markup language, the language used to produce documents for the World Wide Web. Using tags and attributes, HTML tells Web browsers how to display the text, hyperlinks and images on a Web page, as well as how the page should respond when a user interacts with it. HTML pages are typically distributed on the Web using hypertext transfer protocol.