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.
Best Answer: HTML, a contraction of Hypertext Markup Language, is the predominant markup language for web pages. It provides a means to describe the structure of text-based information in a document â by denoting certain text as headings, paragraphs, lists, and so on â and to supplement that text with interactive forms, embedded images, and other objects.