fix some AMP errors

content/previously/index.md

@@ -4,7 +4,6 @@ date: 2020-04-22 10:50:04-0400
 description: "An incredibly embarrassing and somewhat painful walkthrough of this site's long history..."
 image: "images/2001_12.png"
 layout: etc
-amp: false
 css: |
   /*!
    *  Comic Neue typeface v2.5 - http://comicneue.com/
@@ -35,7 +34,7 @@ css: |
   div#content code {
     font-size: 0.85em;
   }
-  div#content iframe#y2k {
+  div#content iframe {
     width: 100%;
     height: 500px;
     border: 2px solid #e3d18c;
@@ -70,7 +69,7 @@ css: |
 **🚨 Trigger warning:** marquees, Comic Sans MS, popup windows, <code>color: <span class="limegreen">limegreen</span></code>... [Click for the **_FULL_** experience anyway.](https://y2k.jarv.is/)
 
 <figure>
-  <iframe id="y2k" src="https://jakejarvis.github.io/my-first-website/" title="My Terrible, Horrible, No Good, Very Bad First Website"></iframe>
+  {{< iframe src="https://jakejarvis.github.io/my-first-website/" width="850" height="500" title="My Terrible, Horrible, No Good, Very Bad First Website" >}}
   <figcaption>
     November 2001 (<a href="https://github.com/jakejarvis/my-first-website" target="_blank" rel="noopener">archived source</a>)
   </figcaption>

content/stats.md

@@ -5,7 +5,6 @@ url: /stats
 layout: etc
 sitemap:
   changefreq: never
-amp: false
 css: |
   div#content iframe {
     display: block;
@@ -21,4 +20,4 @@ This website uses [**Fathom Analytics**](https://usefathom.com/ref/ZEYG0O) to ta
 
 In that case, why not share them? 😊 Pageviews for the past month are graphed below and more information (top pages, referrers, etc.) can be found [on a publicly-accessible dashboard](https://app.usefathom.com/share/ppsqzudy/jarv.is).
 
-{{< iframe src="https://app.usefathom.com/share/ppsqzudy/jarv.is#/?range=last_7_days&site=49569" title="Fathom Analytics dashboard" width="100%" height="600" sandbox="allow-same-origin allow-scripts allow-popups" >}}
+{{< iframe src="https://app.usefathom.com/share/ppsqzudy/jarv.is#/?range=last_7_days&site=49569" title="Fathom Analytics dashboard" width="850" height="600" sandbox="allow-same-origin allow-scripts allow-popups" >}}

layouts/shortcodes/iframe.amp.html

@@ -1,8 +1,8 @@
 <amp-iframe
   layout="responsive"
-  width="{{ .Get "width" }}"
-  height="{{ .Get "height" }}"
   src="{{ .Get "src" }}"
+  {{ with .Get "width" }}width="{{ . }}"{{ end }}
+  {{ with .Get "height" }}height="{{ . }}"{{ end }}
   {{ with .Get "title" }}title="{{ . }}"{{ end }}
   {{ with .Get "sandbox" }}sandbox="{{ . }}"{{ end }}>
 </amp-iframe>