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From 23rd to 4 days to read the "Head first HTML and CSS" this book, the book explains the way simple, easy to understand, combined with exercises, easy to remember, is a good introductory book. Here is the study note for this book:
I. Knowledge of HTML
Hypertext Markup Language, abbreviation for Hypertext Markup Language. Tag text to tell the structure of the browser text.
Comments are placed between <!--and the browser ignores the content.
1. Create an HTML file on your computer
Open Notepad, save as suffix. html, encoded as UTF-8.
Local test, open directly in the browser, you can directly drag the file in.
2. Basic structure of HTML file
<body>
</body>
A complete element:
3. Add Style,<style> elements
Put in the head, make type, add attribute type to CSS (also can not specify), can be in the head tag Riga attribute.
<style type= "Text/css" >
</style>
CSS is another language is the abbreviation of cascading style sheet, cascading style sheets, syntax structure is different from HTML. HTML is responsible for page structure (layout), CSS is responsible for page style (performance).
The basic syntax for CSS is: element name {attribute 1: value;
Attribute 2: value;
}
Example: Body {
Background-color: #d2b48c;
border:2px dotted black;
margin-left:20%;
margin-right:20%;
padding:10px;
}
Ii. in-depth understanding of hypertext Ht,hypertext
1. Hyperlinks, Elements <a>
<a href= "direction.html" >detailed derections</a>
The href attribute to specify the target file of the link,> < middle content is the text (label) that the browser displays, usually with an underscore, which represents clickable. HREF is an abbreviation, hypertextreference, and hypertext reference.
2. Reference Path
In the content of this site with a relative address, external site content with absolute address URL
If relative to this page, the content to be referenced is in sub-folder: Images/coffee.jpg
If relative to this page, to refer to the content is in the sibling folder, you have to first return to the parent folder, in the downstream to the sibling folder: ... /images/coffee.jpg, a ".." Represents an upstream level. If you want to uplink level two, use the. /..。
If relative to this page, to refer to the content at this level, then directly with Coffee.jpg
Note: "/" is used only as a separator.
Third, web page construction
First, according to the sketch of a page, is to use HTML elements to identify the basic framework, and then add elements and content complete, form a basic layout.
1. block element, inline element
Block elements:<p> <blockquote> <ol> <ul> <li>, separate display, front and rear line breaks.
inline element:<q> <em> , no line break.
2. Other
<br> is a newline character with no content and no end tag. is a void element. is also a void element, with attributes, but no content and end tags.
ul:unordered List unordered lists
Ol:ordered List ordered lists
Li:list Item List Item
UL and Li, ol and Li, must be used in groups, can not be used alone and can not be combined with other use.
Special characters are represented by character entities. & is the first character of all entities, such as < is <, but & cannot be used alone, with entity &.
"2017.7.27" HTML and CSS learning Note 1-3
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