Make sure attachment box isn't cut off on small screens

app/ui/legacy/src/main/res/layout/message_compose_attachment.xml

@@ -2,7 +2,7 @@
 <androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="300dp"
+    style="@style/AttachmentCard"
     android:layout_height="wrap_content"
     android:layout_marginStart="12dp"
     android:layout_marginEnd="12dp"

app/ui/legacy/src/main/res/layout/message_view_attachment.xml

@@ -2,13 +2,13 @@
 <com.fsck.k9.ui.messageview.AttachmentView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="wrap_content"
+    style="@style/AttachmentView"
     android:layout_height="wrap_content"
     android:paddingBottom="4dp"
     android:id="@+id/attachment">
 
     <androidx.cardview.widget.CardView
-        android:layout_width="300dp"
+        style="@style/AttachmentCard"
         android:layout_height="wrap_content"
         android:layout_marginStart="12dp"
         android:layout_marginEnd="12dp"

app/ui/legacy/src/main/res/layout/message_view_attachment_locked.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <com.fsck.k9.ui.messageview.LockedAttachmentView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="wrap_content"
+    style="@style/AttachmentView"
     android:layout_height="wrap_content"
     android:paddingBottom="4dip"
     android:inAnimation="@anim/fade_in"
@@ -9,7 +9,7 @@
     app:previewInitialChild="0">
 
     <androidx.cardview.widget.CardView
-        android:layout_width="300dp"
+        style="@style/AttachmentCard"
         android:layout_height="wrap_content"
         android:layout_marginStart="12dp"
         android:layout_marginEnd="12dp"

app/ui/legacy/src/main/res/values-w360dp/styles.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="AttachmentView" parent="">
+        <item name="android:layout_width">wrap_content</item>
+    </style>
+
+    <style name="AttachmentCard" parent="">
+        <item name="android:layout_width">300dp</item>
+    </style>
+
+</resources>
+

app/ui/legacy/src/main/res/values/styles.xml

@@ -99,5 +99,13 @@
         <item name="android:textSize">22sp</item>
     </style>
 
+    <style name="AttachmentView" parent="">
+        <item name="android:layout_width">match_parent</item>
+    </style>
+
+    <style name="AttachmentCard" parent="">
+        <item name="android:layout_width">match_parent</item>
+    </style>
+
 </resources>