[am] Make param values input field wider

Before: https://screenshot.googleplex.com/8UtXutqMwcEfdP6
After: https://screenshot.googleplex.com/AUDU6AmBAzTbJVL

Bug: skia:10733
Change-Id: I452626c905fa84ffca5969e01a1b126c85bc9ee9
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/324189
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
diff --git a/am/modules/silence-sk/silence-sk.js b/am/modules/silence-sk/silence-sk.js
index 627e5f6..399dcee 100644
--- a/am/modules/silence-sk/silence-sk.js
+++ b/am/modules/silence-sk/silence-sk.js
@@ -113,7 +113,7 @@
       </td>
       <th>${k}</th>
       <td>
-        <input @change=${(e) => ele._modifyRule(e, k)} .value=${displayParamValue(o[k])}></input>
+        <input class=param-val @change=${(e) => ele._modifyRule(e, k)} .value=${displayParamValue(o[k])}></input>
         ${displayAddBots(botCentricParams, k, ele)}
       </td>
     </tr>`);
@@ -126,7 +126,7 @@
         <input id='add_param_key'></input>
       </td>
       <td>
-        <input id='add_param_value'></input>
+        <input class=param-val id='add_param_value'></input>
       </td>
     </tr>
   `);
diff --git a/am/modules/silence-sk/silence-sk.scss b/am/modules/silence-sk/silence-sk.scss
index ff9fd0a..273c3fe 100644
--- a/am/modules/silence-sk/silence-sk.scss
+++ b/am/modules/silence-sk/silence-sk.scss
@@ -56,6 +56,10 @@
     width: 3em;
   }
 
+  input.param-val {
+    width: 20em;
+  }
+
   button.param-btns {
     font-size: x-small;
   }