box-sizing: border-box;

Author: simonw

clipboard-viewer.html

@@ -5,6 +5,9 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Clipboard Format Viewer</title>
     <style>
+        * {
+            box-sizing: border-box;
+        }
         body {
             font-family: Arial, sans-serif;
             line-height: 1.6;