how to build a table in markdown code example

Example 1: table in markdown

Colons can be used to align columns.

| Tables        | Are           | Cool  |
| ------------- |:-------------:| -----:|
| col 3 is      | right-aligned | $1600 |
| col 2 is      | centered      |   $12 |
| zebra stripes | are neat      |    $1 |

Markdown | Less | Pretty
--- | --- | ---
*Still* | `renders` | **nicely**
1 | 2 | 3

Example 2: how to draw table in readme file

Attempt | #1 | #2 | #3 | #4 | #5 | #6 | #7 | #8 | #9 | #10 | #11
--- | --- | --- | --- |--- |--- |--- |--- |--- |--- |--- |---
Seconds | 301 | 283 | 290 | 286 | 289 | 285 | 287 | 287 | 272 | 276 | 269