content-type Specifies the character encoding for the document.\nExample:\n<meta http-equiv="content-type" content="text/html; charset=UTF-8">
default-style Specified the preferred style sheet to use.\nExample:\n<meta http-equiv="default-style" content="the document's preferred stylesheet">\nNote:\nThe value of the content attribute above must match the value of the title attribute on a link element in the same document, or it must match the value of the title attribute on a style element in the same document.
refresh Defines a time interval for the document to refresh itself.\nExample:\n<meta http-equiv="refresh" content="300">