How do I align a table to the right (or left)?
You can use  to float a table to  the right. (Use ALIGN="left" to float it to the left.)  Any content that follows the closing 
 tag will  flow around the table. Use 
 or 
 to mark the end of the text that is to flow  around the table, as shown in this example:
The table in this example will float to the right....
This text will wrap to fill the available space to the  left of (and if the text is long enough, below) the  table.
This text will appear below the table, even if there is  additional room to its left.
 How can I use tables to structure forms?  
Small forms are sometimes placed within a TD element  within a table. This can be a useful for positioning a  form relative to other content, but it doesn't help  position the form-related elements relative to each  other.
To position form-related elements relative to each  other, the entire table must be within the form. You  cannot start a form in one TH or TD element and end in  another. You cannot place the form within the table  without placing it inside a TH or TD element. You can  put the table inside the form, and then use the table to  position the INPUT, TEXTAREA, SELECT, and other  form-related elements, as shown in the following  example.
 How do I center a table?  
In your HTML, use...
In your CSS, use
div.center {
text-align: center;
}
div.center table {
margin-left: auto;
margin-right: auto;
text-align: left;
}
 How do I use forms?  
The basic syntax for a form is: 
When the form is submitted, the form data is sent to the  URL specified in the ACTION attribute. This URL should  refer to a server-side (e.g., CGI) program that will  process the form data. The form itself should contain
* at least one submit button (i.e., an  element),
* form data elements (e.g., , 
 How can I check for errors?  
HTML validators check HTML documents against a formal  definition of HTML syntax and then output a list of  errors. Validation is important to give the best chance  of correctness on unknown browsers (both existing  browsers that you haven't seen and future browsers that  haven't been written yet).
HTML checkers (linters) are also useful. These programs  check documents for specific problems, including some  caused by invalid markup and others caused by common  browser bugs. Checkers may pass some invalid documents,  and they may fail some valid ones.
All validators are functionally equivalent; while their  reporting styles may vary, they will find the same  errors given identical input. Different checkers are  programmed to look for different problems, so their  reports will vary significantly from each other. Also,  some programs that are called validators (e.g. the "CSE  HTML Validator") are really linters/checkers. They are  still useful, but they should not be confused with real  HTML validators.
When checking a site for errors for the first time, it  is often useful to identify common problems that occur  repeatedly in your markup. Fix these problems everywhere  they occur (with an automated process if possible), and  then go back to identify and fix the remaining problems.
Link checkers follow all the links on a site and report  which ones are no longer functioning. CSS checkers  report problems with CSS style sheets. 
 Do I have to memorize a bunch of tags?  
No. Most programs that help you write HTML code already  know most tags, and create them when you press a button.  But you should understand what a tag is, and how it  works. That way you can correct errors in your page more  easily. 
 How do I make a form so it can be submitted by hitting  ENTER?
The short answer is that the form should just have one and no TEXTAREA, though it can have other form elements like checkboxes and radio buttons.
 How do I set the focus to the first form field?  
You cannot do this with HTML. However, you can include a  script after the form that sets the focus to the  appropriate field, like this:
A similar approach uses  to set the  focus, but some browsers seem to process the ONLOAD  event before the entire document (i.e., the part with  the form) has been loaded. 
 How can I eliminate the extra space after a  tag? 
HTML has no mechanism to control this. However, with  CSS, you can set the margin-bottom of the form to 0. For  example:
How can I use tables to structure forms?  
Small forms are sometimes placed within a TD element  within a table. This can be a useful for positioning a  form relative to other content, but it doesn't help  position the form-related elements relative to each  other.
To position form-related elements relative to each  other, the entire table must be within the form. You  cannot start a form in one TH or TD element and end in  another. You cannot place the form within the table  without placing it inside a TH or TD element. You can  put the table inside the form, and then use the table to  position the INPUT, TEXTAREA, SELECT, and other  form-related elements, as shown in the following  example.
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