The label tag is an HTML forms tag that allows web developers to tell the browser or user-agent that text appearing on the page is actually a label for a form element. The label tag says this content isn't just text, it's describing this textarea (or other form input element) and should be associated with it..
http://webdesign.about.com/od/forms/a/aa052206.htm
input type=password. textarea. select. Note 2: The label element is not used for the following because labels for these elements are provided via the value attribute (for Submit and Reset buttons), the alt attribute (for image buttons), or element content itself (button). Submit and Reset buttons (input type=submit or input type=reset).
http://www.w3.org/TR/WCAG20-TECHS/H44.html
Chlorine is in group 17 of periodic table, also called the halogens, and is not found as the element in nature-only as a compound. The most common of these being salt, or sodium chloride, and the potassium compounds sylvite (or potassium chloride) and carnallite (potassium magnesium chloride hexahydrate).
http://www.rsc.org/periodic-table/element/17/chlorine
They are the basic elements of forms, but they don't provide any juice. The thing about forms is that there are many more form tags than most forms use. One of my favorites is the label tag. The label tag is usually not used because people forget about it.
http://webdesign.about.com/od/forms/a/aa052206.htm
Chlorine is what you might describe as a Jekyll and Hyde element; it is the friend of the synthetic chemist and has found a use in a number of 'nice' applications such as the disinfecting of drinking water and keeping our swimming pools clean.
http://www.rsc.org/periodic-table/element/17/chlorine
59 Co is the only stable cobalt isotope and the only isotope to exist naturally on Earth. 22 radioisotopes have been characterized with the most stable being 60 Co with a half-life of 5.2714 years, 57 Co with a half-life of 271.8 days, 56 Co with a half-life of 77.27 days, and 58 Co with a half-life of 70.86 days.
https://en.wikipedia.org/wiki/Cobalt
Use the Label Tag. To use the label tag, simply surround the text that you want associated with a form field with the label tag. If you don't include the form field inside the label tag, then you should use the for attribute to associate it with the id of the form element you want to label. or.
http://webdesign.about.com/od/forms/a/aa052206.htm
This is because chlorine is a toxic gas, and has been used as a chemical weapon. Chlorine is yellowy-green in colour, as is the image. Appearance. A yellowy-green dense gas with a choking smell. Uses. Chlorine kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water. It is also used to make hundreds of consumer products from paper to paints, and from textiles to insecticides. About 20% of chlorine produced is used to make PVC.
http://www.rsc.org/periodic-table/element/17/chlorine
1 With the label tag, the user-agent knows that the text First Name belongs with the input box for that entry, and so it will read the label correctly along with the input text box. 2  Make your forms easy to click on.
http://webdesign.about.com/od/forms/a/aa052206.htm
Description. The objective of this technique is to use the label element to explicitly associate a form control with a label. A label is attached to a specific form control through the use of the for attribute. The value of the for attribute must be the same as the value of the id attribute of the form control.
http://www.w3.org/TR/WCAG20-TECHS/H44.html
what is the label element used for
The label element allows web developers to tell the browser or user-agent that text appearing on the page is actually a label for a form element.