controlling sizes of images in CSS
You can control the size of an image using the width and height properties in CSS, just like you can for any other box.
Specifying image sizes helps pages to load more smoothly because the HTML and CSS code will often load before the images
Centering images Using CSS
By default, images are inline elements. This means that they flow within the surrounding text. In order to center an image, it should be turned into a blocklevel element using the display property with a value of block.
display: block; // margin: 0px auto;
background-image
The background-image property allows you to place an image behind any HTML element. This could be the entire page or just part of the page. By default, a background image will repeat to fill the entire box.
background-repeat
The background-repeat property can have four values:
1- repeat :
The background image is repeated both horizontally and vertically
2- repeat-x :
The image is repeated horizontally only
3- repeat-y :
The image is repeated vertically only
4- no-repeat :
The image is only shown once.
5- fixed
The background image stays in the same position on the page.
6- scroll
The background image moves up and down as the user scrolls up and down the page.
background-position
When an image is not being repeated, you can use the background-position property to specify where in the browser window the background image should be placed.
How to Identify Keywords and Phrases
Determining which keywords to use on your site can be one of the hardest tasks when you start to think about SEO. Here are six steps that will help you identify the right keywords and phrases for your site.
1- Brainstorm List down the words that someone might type into Google to find your site. Be sure to include the various topics, products or services your site is about.
2- Organize Group the keywords into separate lists for the different sections or categories of your website.
3- Research There are several tools that let you enter your keywords and then they will suggest additional keywords you might like to consider,
4- Compare It is very unlikely that your site will appear at the top of the search results for every keyword. This is especially true for topics where there is a lot of competition. The more sites out there that have already been optimized for a given keyword, the harder it will be for you to rise up the search results when people search on that term.
5- Refine Now you need to pick which keywords you will focus on. These should always be the ones that are most relevant to each section of your site.
6- Map Now that you have a refined list of keywords, you know which have the most competition, and which ones are most relevant, it is time to start picking which keywords you will use for each page.
In order to put your site on the web you will need a domain name and web hosting
DOMAIN Names
Your domain name is your web address (e.g. google.com or bbc. co.uk). There are many websites that allow you to register domain names. Usually you will have to pay an annual fee to keep that domain name.
WEB Hosting
So that other people can see your site, you will need to upload it to a web server. Web servers are special computers that are constantly connected to the Internet. They are specially set up to serve web pages when they are requested.
FTP & Third Party Tools
To transfer your code and images from your computer to your hosting company, you use something known as File Transfer Protocol.
As the name suggests, File Transfer Protocol (or FTP) allows you to transfer files across the Internet from your computer to the web server hosting your site.
The (video) and (audio) elements allow us to embed video and audio into web pages
The time display currently breaks if the video is an hour long or more (well, it won’t display hours; just minutes and seconds)
Because audio elements have the same HTMLMediaElement functionality available to them, you could easily get this player to work for an audio element too
Flash
Since the late 1990s, Flash has been a very popular tool for creating animations, and later for playing audio and video in websites.
Since 2005, a number of factors have meant that fewer websites are written in Flash or even use elements of Flash in their pages.