Fixed: Preferred words remove button in Firefox

Fixes #3710

frontend/src/Components/Form/KeyValueListInputItem.css

@@ -8,7 +8,16 @@
   }
 }
 
+.inputWrapper {
+  flex: 1 0 0;
+}
+
+.buttonWrapper {
+  flex: 0 0 22px;
+}
+
 .keyInput,
 .valueInput {
+  width: 100%;
   border: none;
 }

frontend/src/Components/Form/KeyValueListInputItem.js

@@ -63,6 +63,7 @@ class KeyValueListInputItem extends Component {
 
     return (
       <div className={styles.itemContainer}>
+        <div className={styles.inputWrapper}>
           <TextInput
             className={styles.keyInput}
             name="key"
@@ -72,7 +73,9 @@ class KeyValueListInputItem extends Component {
             onFocus={this.onFocus}
             onBlur={this.onBlur}
           />
+        </div>
 
+        <div className={styles.inputWrapper}>
           <TextInput
             className={styles.valueInput}
             name="value"
@@ -82,14 +85,17 @@ class KeyValueListInputItem extends Component {
             onFocus={this.onFocus}
             onBlur={this.onBlur}
           />
+        </div>
 
         {
           !isNew &&
+            <div className={styles.buttonWrapper}>
               <IconButton
                 name={icons.REMOVE}
                 tabIndex={-1}
                 onPress={this.onRemovePress}
               />
+            </div>
         }
       </div>
     );

frontend/src/Series/Details/EpisodeRow.css

@@ -13,7 +13,7 @@
 .episodeNumber {
   composes: cell from '~Components/Table/Cells/TableRowCell.css';
 
-  width: 70px;
+  width: 65px;
 }
 
 .size {