Example 4-1: the styles for the main content of an html document main { clear: left; } main h1 { font-size: 170%; } main h2 { font-size: 130%; } main p. indent { text-indent: 2em; } main a. date_passed { color: gray; } (refer to example 4-1) what does the clear property do?

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal