fix: Lighthouse btn accessibility and image size

wowchemy/layouts/partials/widgets/about.html

@@ -26,7 +26,9 @@
       <img class="avatar {{if eq $avatar_shape "square"}}avatar-square{{else}}avatar-circle{{end}}" src="https://s.gravatar.com/avatar/{{ md5 $person.email }}?s=270')" alt="{{$person_page.Title}}">
       {{ else if $avatar }}
       {{ $avatar_image := $avatar.Fill "270x270 Center" }}
-      <img class="avatar {{if eq $avatar_shape "square"}}avatar-square{{else}}avatar-circle{{end}}" src="{{ $avatar_image.RelPermalink }}" alt="{{$person_page.Title}}">
+      <img class="avatar {{if eq $avatar_shape "square"}}avatar-square{{else}}avatar-circle{{end}}"
+           width="{{ $avatar_image.Width }}" height="{{ $avatar_image.Height }}"
+           src="{{ $avatar_image.RelPermalink }}" alt="{{$person_page.Title}}">
       {{ end }}
 
       <div class="portrait-title">

wowchemy/layouts/partials/widgets/contact.html

@@ -52,7 +52,7 @@
             <div class="form-group" data-netlify-recaptcha="true"></div>
           {{ end }}
         {{ end }}
-        <button type="submit" class="btn btn-outline-primary px-3 py-2">{{ i18n "contact_send" | default "Send" }}</button>
+        <button type="submit" class="btn btn-primary px-3 py-2 w-100">{{ i18n "contact_send" | default "Send" }}</button>
       </form>
     </div>
   {{end}}