fix(md-print): correct alert padding

src/styles.css

@@ -248,6 +248,21 @@ icon.big .icon-label-stroke {
     word-break: break-word;
 }
 
+/* Alerts: the rem-based padding is oversized next to the mm-based print font,
+   and the first paragraph's margin stacks on top of the padding. */
+.md-print-content .markdown-alert {
+    padding: 0.5em 0.75em;
+    margin-bottom: 0.45em;
+}
+
+.md-print-content .markdown-alert-title + * {
+    margin-top: 0;
+}
+
+.md-print-content .markdown-alert > :last-child {
+    margin-bottom: 0;
+}
+
 .md-print-cut-line {
     position: absolute;
     left: 148.5mm;