diff --git a/tools/Base64/index.html b/tools/Base64/index.html
index 9ef02f1..8d8dd58 100644
--- a/tools/Base64/index.html
+++ b/tools/Base64/index.html
@@ -1,11 +1,11 @@
 <h1>Encode/decode data to base64</h1>
 <form>
     <label>Input data</label><br>
-    <textarea value="" rows="3" id="input" required></textarea><br>
+    <textarea value="" rows="6" cols="80" id="input" required></textarea><br>
     <button type="button" onclick="doencode();">Encode</button>
     <button type="button" onclick="dodecode();">Decode</button><br>
     <label>Output</label><br>
-    <textarea id="output" readonly></textarea><br>
+    <textarea id="output" rows="6" cols="80" readonly></textarea><br>
     <button type="button" id="copy" onclick="docopy();">Copy</button>
 </form>