Set max width 100% for images

app/src/main/java/eu/faircode/email/HtmlEx.java

@@ -52,7 +52,7 @@ public class HtmlEx {
 
     private static final int TO_HTML_PARAGRAPH_FLAG = 0x00000001;
 
-    public HtmlEx(Context context){
+    public HtmlEx(Context context) {
         this.context = context;
     }
 
@@ -109,7 +109,7 @@ public class HtmlEx {
             String elements = " ";
             boolean needDiv = false;
 
-            for(int j = 0; j < style.length; j++) {
+            for (int j = 0; j < style.length; j++) {
                 if (style[j] instanceof AlignmentSpan) {
                     Layout.Alignment align =
                             ((AlignmentSpan) style[j]).getAlignment();
@@ -465,6 +465,8 @@ public class HtmlEx {
                         out.append(((ImageSpan) style[j]).getSource());
                         out.append("\"");
 
+                        out.append("style=\"max-width: 100%; height: auto;\"");
+
                         if (style[j] instanceof ImageSpanEx) {
                             ImageSpanEx img = (ImageSpanEx) style[j];
                             int w = img.getWidth();