The checkbox is a way to allow users making multiple choices from a given set of options. For example, allowing the customers to select the color of T-shirts for placing an order.
The select in HTML is the way to show users pre-defined values in a dropdown. For example, giving a user option to select a title from the Mr, Miss, Mrs etc. options. The HTML dropdown is used in forms.
HTML form has different elements. The most important is the input type element. The input element defines what kind of input user can enter.
The HTML iframe tag is used to embed or include another document within the current web page. This is quite useful, especially if you want to integrate a web page from another website. You can include a web page from the current domain as well.
The font tag is used to set the size, color, style and family of text in web pages. You can set the font of a specific section (like a paragraph, headings, div) in HTML documents separately.
The !doctype is the way to declare or instruct your web browser that which version of HTML you are going to use to write a web page. This is the first thing to do on your web page even before the html tag.
You can use CSS to create buttons in your web pages that also match the theme of your website. You can use inline CSS properties in the style attribute of the button or add the CSS class/id
The img tag of HTML is used to include the images in your web pages. You may specify the source of an image in the img src attribute along with alternative text in the alt attribute.
The Forms provide different input types to be used to allow users entering the required information. For example, you can use text boxes, checkboxes, textarea, radio buttons, input type file to let upload images, pdfs, or other files, submit buttons in the forms.