refactor: 移除管理页面中冗余的 CSS 样式声明

src/routes/admin/categories/+page.svelte

@@ -238,9 +238,6 @@
 		background-color: rgba(0,0,0,0.02);
 	}
 
-	.actions {
-		white-space: nowrap;
-	}
 
 	.inline-form {
 		display: inline-block;

src/routes/admin/posts/[id]/+page.svelte

@@ -409,9 +409,6 @@
 		overflow-y: auto;
 	}
 
-	.editor-container {
-		display: block;
-	}
 
 	.form-grid {
 		display: grid;

src/routes/admin/tags/+page.svelte

@@ -218,9 +218,6 @@
 		background-color: rgba(0,0,0,0.02);
 	}
 
-	.actions {
-		white-space: nowrap;
-	}
 
 	.inline-form {
 		display: inline-block;