that creates a centered list of buttons. Unfortunately at the top of the page.   &lt;html&gt; &lt;head&gt;     &lt;style&gt;         #test {             display: table;             margin: 0 auto;             bottom: 5em;         }         .mybtn .button {             background-color: orange;             border: 1px solid green;             width: 120px;             color: white;             font-size: 14px;             padding: 10px;             text-align: center;             text-decoration: none;             display: block;         }     &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="test"&gt;     &lt;div class="mybtn"&gt;         &lt;button class="button"&gt;Result&lt;/button&gt;         &lt;button class="button"&gt;Result&lt;/button&gt;         &lt;button class="button"&gt;Result&lt;/button&gt;         &lt;button class="button"&gt;Result&lt;/button&gt;     &lt;/div&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt;   any reason why bottom: 5em does not work ?  as a beginner in css I would appreciate any hint on why I need also to set .mybtn make the css work !
Given the following HTML:   &lt;div id="container"&gt;   &lt;!-- Other elements here --&gt;   &lt;div id="copyright"&gt;     Copyright Foo web designs   &lt;/div&gt; &lt;/div&gt;    I would like #copyright to stick to the bottom of #container. Can I achieve this without using absolute positioning?
For some reason I can't unhide my objects anymore in this file. Is it a bug? How many ordered pairs $(A,B)$ they are if $A$ and $B$ are subsets of $\{ 1,2,3,4,5 \}$ such that $A \cap B = \{1\}$? How many ordered pairs $(A,B)$ they are if $A$ and $B$ are subsets of $\{ 1,2,3,4,5 \}$ such that $A \cap B = \{1\}$?  If 1 is in both sets :  Size of $A$ is $&gt;1$ and size of $B$ is $&gt;1$.  $\Rightarrow$ Size of $A \cup B =4$  $$5 \cdot (3 \cdot 3 \cdot 3 \cdot 3) = 405$$ is not correct.  What am I missing here? How do I tail a log file and keep tailing it when the latest one changes date? How confident is my model? Is there a way to know? Trying to find some simple SQL Server PIVOT examples.  Most of the examples that I have found involve counting or summing up numbers.  I just want to pivot some string data.  For example, I have a query returning the following.  Action1 VIEW   Action1 EDIT   Action2 VIEW   Action3 VIEW   Action3 EDIT     I would like to use PIVOT (if even possible) to make the results like so:  Action1 VIEW EDIT   Action2 VIEW NULL   Action3 VIEW EDIT     Is this even possible with the PIVOT functionality? New to the cloud so pardon this question as I'm certain it's relatively simple!  I've setup my Google Cloud Instance and I'm now trying to connect to it using FileZilla. I have a good understanding of how to do this... but I've been completely unable to download my .ppk file, public key, and private keys. The documentation clearly gives the folder that the files are located in.... but I'm unable to navigate to these folders (it's as if they don't exist) furthermore I'm not really sure how to download something to my computer through the SSH terminal.  Also somewhat infuriating is that I've found the keys in the web portal on Google Cloud however there is no option to download them. I can only view them in clear text.  Any help would be greatly appreciated! How to pause with specific time between two command in script? I want to do such as following:  #!/bin/bash command1 pause 30 seconds command2 exit   This is only example script with pause of 30 seconds between run of 2 command.  How to do this? Intuitive explanation of the inverse square power $\frac{1}{r^2}$ in Newton's law of gravity What documentation is needed for a tourist to drive a US citizen's car? I'm hoping someone could check my work. I'm trying to simplify the equation for $x$. $$(\frac{x}{a})^{3.2} + (\frac{y}{b})^{3.2} = 1$$ $$\frac{a}{b} = \frac{174.1}{86}$$ Thus I began by substituting $a$ with: $$a = \frac{174.1}{86}b$$ $$((\frac{86}{174.1})(\frac{x}{b}))^{3.2} + (\frac{y}{b})^{3.2} = 1$$ $$((\frac{86}{174.1})(\frac{x}{b}))^{3.2} = 1 - (\frac{y}{b})^{3.2}$$ $$(\frac{x}{b})^{3.2} = \frac{(1 - (\frac{y}{b})^{3.2})(174.1)^{3.2}}{(86)^{3.2}}$$ $$x^{3.2} = \frac{(1 - (\frac{y}{b})^{3.2})(174.1)^{3.2}(b)^{3.2}}{(86)^{3.2}}$$ $$x^{3.2} = \frac{(1 - (\frac{y}{b})^{3.2})((174.1)(b))^{3.2}}{(86)^{3.2}}$$ $$x^{\frac{16}{5}} = \frac{(1 - (\frac{y}{b})^{3.2})((174.1)(b))^{3.2}}{(86)^{3.2}}$$ $$x = [\frac{(1 - (\frac{y}{b})^{3.2})((174.1)(b))^{3.2}}{(86)^{3.2}}]^{\frac{5}{16}}$$ Is my work correct, or am I completely off the board? Books on cosmology I have finished Carroll's general relativity book, Spacetime and Geometry. I am specifically interested in cosmology, so is there any book which goes more in depth into cosmology? I prefer a mathematically rigorous book, which goes beyond the cosmology chapter in Carroll's book. The Big Bang and inflation theory should be dealt with in depth. Can I apply for a Schengen visa at a country where I'm not a citizen? If so, under what conditions? I'm a citizen of country A who would like to apply for a Schengen visa at a consulate in country B. When is this possible? Singular or plural following a list The arrival of Minecraft Beta 1.5 brought weather conditions. However, it can at times be inconvenient when you're trying to screenshot something and show it off (as it reduces lighting and obstructs your view slightly). Is there anyway to turn weather off?  Alternatively, is there a way to speed up the duration of weather or "skip" it? Find the exact value of the infinite sum $\sum_{n=1}^\infty \big\{\mathrm{e}-\big(1+\frac1n\big)^{n}\big\}$ How can we find the exact value of the infinite sum  $$ \displaystyle\sum_{n=1}^\infty \left\{\mathrm{e}-\Big(1+\frac1n\Big)^n\right\}? $$  This problem appears in:  , p.114. I want to know, if this bug is fixed, because all previous versions of Ubuntu didn't work for me. So I just want to know, should i leave Windows 10 and go for Ubuntu 17.10. Thanks! Texture Channel animated, doesn't appear in viewport How to prove $\cos \frac{2\pi }{5}=\frac{-1+\sqrt{5}}{4}$? I would like to find the apothem of a regular pentagon. It follows from   $$\cos \dfrac{2\pi }{5}=\dfrac{-1+\sqrt{5}}{4}.$$  But how can this be proved (geometrically or trigonometrically)? How to assign values to a MATLAB matrix on the diagonal? How does SO's (or other SE sites) versioning work of questions and answers? Do they use some standard piece of code or is it something homebrew?  With versioning I meant if for example a question is edited you'll see all the changes (a diff).