[www] screenshot width on mobile; typo

www/docs/columns.md

@@ -9,7 +9,7 @@ Commands(s)     Operation
 ------------    -----------
 `!`             pins the current column on the left as a key column
  `H`  `L`       slides the current column one position to the left/right
-`gG` `gL`       slides the current column all the way to the left/right of the sheet
+`gH` `gL`       slides the current column all the way to the left/right of the sheet
 
 ---
 
@@ -24,7 +24,7 @@ Commands(s)     Operation
 1. Press `C` on the source sheet to open its **Columns sheet**.
 2. Move the cursor right to the **width** column.
 3. Move the cursor down to the row which represents the column you wish to hide.
-4. Press `e` followed by *0* to set the width for that column to **0**.
+4. Press `e` followed by `0` to set the width for that column to **0**.
 5. Press `q` to return to the source sheet.
 
 ###### How to unhide columns

www/index.md

@@ -3,7 +3,7 @@
 <a href="/screenshot.png"><img src="/screenshot.png" alt="screenshot of VisiData in action"/></a>
 </div>
 
-VisiData (`vd` on the command-line) is an [open-source](https://github.com/saulpw/visidata) multitool for interacting with tabular data.  It's great for investigative journalists, data scientists, terminal diehards, and anyone else who wants to quickly look at or manipulate data.
+VisiData (`vd` on the command-line) is an [open-source](https://github.com/saulpw/visidata) multitool for interacting with tabular data from within the terminal.  It's great for investigative journalists, data scientists, unix command-line users, and anyone else who wants to quickly look at or manipulate data.
 
 ## Recent Updates
 
@@ -17,6 +17,8 @@ VisiData (`vd` on the command-line) is an [open-source](https://github.com/saulp
 
 - <form action="https://tinyletter.com/visidata" method="post" target="popupwindow" onsubmit="window.open('https://tinyletter.com/visidata', 'popupwindow', 'scrollbars=yes,width=800,height=600');return true">Sign up for the email newsletter: <input type="text" style="width:140px" name="email" id="tlemail" /><input type="hidden" value="1" name="embed"/><input type="submit" value="Subscribe" /> (powered by <a href="https://tinyletter.com" target="_blank">TinyLetter</a>)</form>
 
+- Follow [\@saulfp](https://twitter.com/saulfp) on Twitter for more regular updates, tips, and tricks!
+
 ---
 
 ## Installation

www/main.css

@@ -68,7 +68,7 @@ footer {
     height: 2em;
 }
 
-iframe {
+iframe.video {
     margin: auto;
     display: block;
     max-width: 100%;
@@ -234,11 +234,13 @@ table td, .table .cell {
 
 .screenshot {
     margin: auto;
-    width: 400px;
+    width: 70%;
+    max-width: 500px;
 }
 
 .screenshot img {
-    width: 400px;
+    width: 100%;
+    max-width: 500px;
 }
 
 .input, .command, .code {