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becomes more powerful through expressions, giving you more flexibility to use custom display rules for specific design scenarios.A media query contains a media type followed by one or more expressions that check for specific conditions, such as the smallest screen width. The media query in the style sheet appears as shown in the example in Listing 2.Listing 2. Media query Rules@media all and (min-width:800px) {...}According to the markup in Listing 2, all screens with a minimum horizontal scree

in the style sheet appears as shown in the example in Listing 2.Listing 2. Media query Rules@media all and (min-width:800px) {...}According to the markup in Listing 2, all screens with a minimum horizontal screen width of 800 pixels (screen and print, etc.) should use the following CSS rules. The rule in the example where the ellipsis is located. For this media query: @media allIs the media type, that is, applies this CSS to all media types.

max_sal_50 max_sal_75---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------KING 5000 10 0 5000 3725 2450 1875CLARK 2450 10.5 5000 3725 2450 1875MILLER 1300 10 1 5000 3725 2450 1875SCOTT 3000 20 0 3000 3000 2975 1100FORD 3000 20 0 3000 3000 2975 1100JONES 2975 20.5 3000 3000 2975 1100ADAMS 1100 20.75 3000 3000 2975 1100SMITH 800 20 1 3000 3000 2975 1100BLAKE 2850 30 0 2850 1575 1375 1250ALLEN 1600 30.2 2850 1575 1375 1

I. About layout adaptation1. Do not use absolute layout2, try to use match_parent instead of fill_parent.3, can use the heavy place as far as possible to use the weight (android:layout_weight)4, if it is a solid color background, try to use the shape of android to Customize.5. If you need to fit at a specific resolution, you can create a new layout-hxw.xml folder on the res directory . For example, to fit the 1080*1800 screen (Meizu MX3 with this resolution), create a new layout-1800x1080.xml f

expression with the temporary variable. (If this part is repeated in the code, you can replace it one by one.) (3) Compile and test. (4) Repeat the above process to process other similar parts. In this example, we start with a simple calculation: // Double price () {// price = basePrice-quantity discount + shippingreturn _ quantity * _ itemPrice-Math. max (0, _ quantity-800) * _ itemPrice * 0.15 + Math. min (_ quantity * _ itemPrice * 0.25, 100 );}T

information is implemented in three ways (1): implicit type conversion Select * From emp Where hiredate> '01-August 1-81 '; (2): Convert string to date .. convert display type Select * From emp Where hiredate> to_date ('1970-01-010', 'yyyy-mm-dd hh24: mi: ss '); (3): converts a date to a string of the date type: Select * From emp Where to_char (hiredate, 'yyyy-mm-ddhh24: mi: ss')> '2017-01-01 02:03:04' 5. convert numbers and strings A -- query the employee's salary: two decimal local currency c

MAX_SAL_50 MAX_SAL_75 ---------- ------------ ---------- KING 5000 10 0 5000 3725 CLARK 2450 10. 5 5000 3725 2450 1875 MILLER 1300 10 1 5000 3725 2450 1875SCO TT 3000 20 0 3000 3000 2975 FORD 1100 20 0 3000 3000 3000 2975 JONES 1100 20. 5 3000 3000 2975 1100 ADAMS 1100 20. 75 3000 3000 2975 1100 SMITH 800 20 1 3000 3000 2975 1100 BLAKE 2850 30 0 2850 1575 1375 ALLEN 1250 30. 2 2850 1575 1375 1250 TURNER 1500 30. 4 2850 1575 1375 1250 WARD 1250 30. 6

suitable for computer color screens. Print applies to what you see in Print Preview mode or what your printer prints. As part of the CSS V3 specification, you can extend the media type function and allow more precise display rules to be used in the style sheet. Media Queries are an expression that evaluates to True or False. If true, the style sheet continues to be used. If False, the style sheet cannot be used. This simple logic becomes more powerful through expressions, giving you mo

I. About layout adaptation1. Do not use absolute layout2, try to use match_parent instead of fill_parent.3, can use the heavy place as far as possible to use the weight (android:layout_weight)4, if it is a solid color background, try to use the shape of android to Customize.5. If you need to fit at a specific resolution, you can create a new layout-hxw.xml folder on the res directory . For example, to fit the 1080*1800 screen (Meizu MX3 with this resolution), create a new layout-1800x1080.xml f

customers feel better, corporate image or there is a great upgrade. One , the number of advertising calls increased, advertising effect increased 30% aboveAccording to our market research on the opening of enterprises, the same customer advertising with 400 and ordinary telephone call rate increased by 30%, high call rate means that the turnover rate is certainly high, the purpose of advertising is not to let customers call the company? So be sure to choose a customer willing to call, so NO. 40

MAX_SAL_50 MAX_SAL_75 -------------------------------------------------------------------------------- KING 5000 10 0 5000 3725 2450 CLARK 2450 5000 3725 2450 1875 MILLER 1300 10 1 5000 3725 2450 SCOTT 3000 20 0 3000 3000 2975 FORD 3000 20 0 3000 3000 2975 JONES 2975 20. 5 3000 3000 2975 1100 ADAMS 1100 20. 75 3000 3000 2975 SMITH 800 20 1 3000 3000 2975 BLAKE 2850 30 0 2850 1575 1375 ALLEN 1600 30. 2 2850 1575 1375 1250 TURNER 1500 30. 4 2850 1575 1

, the working modes of memory and CPU have changed, and the concept of Front-End bus has become somewhat complicated. The Pentium 4 CPU uses quad pumped (4 times of concurrency) technology, which enables the system bus to transmit four times of data in a clock cycle, that is, the transmission efficiency is four times the original, it is equivalent to using four original front-end buses to connect to the memory. When the external frequency is still 133 MHz, the speed of the front-end bus is incre

graphics G31, there are currently 7 models. Bearlake's 7 models, commercial-oriented to start with Q, including Q35 and Q33, for the household including high-end products and two series of mainstream products, high-end products have X38, mainstream products have P35, G35, G33 and later joined the G31. Where the G Word starts with a motherboard chipset product with integrated graphics. High-end X38: Support Quad core processor, ddr3-1333 memory, PCI-E 2.0, pci-e x16x2, front-end bus 1333MHz, w

I need a port between 700 and 800 to be able to access TCP The code is as follows Copy Code -A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 700-j ACCEPT-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 701-j ACCEPT-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 702-j ACCEPT...-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 800-j

these features and dynamically splice image URLs; 2) use the sizes and srcset attributes in HTML, the picture tag, or the image-set attribute in CSS to implement responsive images. Solution 1 is very simple. I skipped it here. solution 2 has many related articles on the Internet. If you are not familiar with it, you can search for "responsive images. Here, let's take a look at the responsive Image Code (via) implemented by picture, sizes, and srcset mentioned in solution 2 ): HTML media="(min-

user query, therefore, a virtual table named "dual" is provided. Example: select upper ('hello') FROM dual; SQL> SELECT UPPER ('hello') FROM dual; UPPER---HELLO: in general use, do users care about whether the data is stored in uppercase or lowercase when entering data? SELECT * FROM emp WHERE ename = ' str'; SQL> SELECT * FROM emp WHERE ename = ' str'; input str value: smith original value 1: SELECT * FROM emp WHERE ename = ' str' New value 1: SELECT * FROM emp WHERE ename = 'Smith 'unselected

query the employee name and salary, and print the three attributes of the/* cursor: % isopen enabled: true enabled, false disabled; % rowcount rows % notfound value: no value true, value false; */set serveroutput ondeclare -- cursor cemp is select ename, sal from emp; pename Emp. ename % type; -- set the type of the variable used for receiving to the same psal emp as the query type. sal % type; begin open cemp; -- open the cursor and execute the query loop -- fetch cemp into pename, psal; -- ex

Canvas star and graphic conversion, canvas star Conversion Graph conversion.1. Draw a starry sky First draw a canvas. width wide canvas. height black star, then draw 200 random positions, random size, random rotation angle of the stars.Window. onload = function () {var canvas = document. getElementById ("canvas"); canvas. width = 800; canvas. height = 800; var context = canvas. getContext ("2d"); context. f

, the width of the division rate is reduced by 23. For example, 1024 width-23 becomes 1001.Note: Firefox or opear does not display the right scroll bar when the content is less than the browser height.So if the resolution is 1024, your page is not as secure as 1000. Set to 9,002 side blank larger, visually more comfortable. Also easy to do some floating layer design.If the resolution is 800, it is generally set to 770. But there are also set to 760.Th

Chinese: First, give some records in the tr file (some records may have other data ). R 2.562406515 _ 93 _ RTR --- 1 DSR 32 [0 ffffffff 1 800] ------- [32 0] 1 [1 1] [0 1 0 0-> 0] [0 0 0 0 0-> 0] 12345: 6789[1, 10/11, 12/13]14: 16[17-1819 20] S 3.000000000 _ 0 _ RTR---0Oscar48[0000]-------[0: 255-0] S 10.00000000 _ 0 _ AGT---2TCP40[0000]-------[0: 01:0320] R 10.00000000 _ 0 _ RTR---2TCP40[0000]-------[0: 01:0320] S 12.50000000 _ 0 _ RTR---0Oscar48[000