大约有 40,000 项符合查询结果（耗时：0.0431秒） [XML]
Opacity CSS not working in IE8
...'t apply several styles to elements that don't "have layout."
see: http://www.satzansatz.de/cssd/onhavinglayout.html
share
|
improve this answer
|
follow
|
...
Add unique constraint to combination of two columns
...ert the row and returning an exception (exceptions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to prevent exce...
Twitter Bootstrap: div in container with 100% height
...ml, body {
height: 100%;
}
.min-100 {
min-height: 100%;
}
https://www.codeply.com/go/dTaVyMah1U
Option 2_ Use vh units:
.vh-100 {
min-height: 100vh;
}
https://www.codeply.com/go/kMahVdZyGj
Then, use flexbox direction column d-flex flex-column on the container, and flex-grow-1 on an...
Why is nginx responding to any domain name?
... This helped me solve a problem where I was trying a redirect from non-www to www that I had to include my ssl certificate in this redirect route otherwise is was trying to grab my default ssl cert which was a for a different domain.
– endyourif
Feb 7 '19 a...
simulate background-size:cover on or
... controls preload width="640" height="360">
<source src="http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4"type="video/mp4" />
<source src="http://www.quirksmode.org/html5/videos/big_buck_bunny.webm"type="video/webm" />
<source src="http://www.quirksmode.org/...
Google Authenticator available as a public service?
...s for PHP (The LAMP Stack)
PHP
https://code.google.com/p/ga4php/
http://www.idontplaydarts.com/2011/07/google-totp-two-factor-authentication-for-php/
You should be careful when implementing two-factor auth, you need to ensure your clocks on the server and client are synchronized, that there is p...
CSS: Change image src on img:hover
...
.img-wrapper {
display: inline-block;
background-image: url(https://www.w3schools.com/w3images/fjords.jpg);
}
.img-wrapper > img {
vertical-align: top;
}
.img-wrapper > img:hover {
opacity: 0;
}
<div class="img-wrapper">
<img src="https://www.w3schools.com/w3...
Where to find the win32api module for Python? [closed]
...it hasn't let me down yet.
UC Irvine Python Extension Repository - http://www.lfd.uci.edu/~gohlke/pythonlibs
pywin32 module - http://www.lfd.uci.edu/~gohlke/pythonlibs/#pywin32
share
|
improve thi...
What does FrameLayout do?
...
Are you sure that you googled it?
http://www.tutorialspoint.com/android/android_frame_layout.htm
Frame Layout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it ...
S3 Error: The difference between the request time and the current time is too large
... then restart ntp service:
sudo service ntp restart
Source: https://www.allcloud.io/how-to/how-to-fix-amazon-s3-requesttimetooskewed/
And a more general article on keeping your time synchronized with NTP:
https://www.digitalocean.com/community/tutorials/how-to-set-up-time-synchronization-on-...