feat: 新增文本框删除按钮功能（还原到）

css/style.css

@@ -17,7 +17,6 @@ html, body {
     display: flex;
     flex-direction: column;
     height: 100vh;
-    position: relative;
 }
 
 /* 顶部工具栏 */
@@ -82,10 +81,6 @@ html, body {
 
 /* 文本编辑器工具栏 */
 .text-editor-toolbar {
-    position: absolute;
-    top: 49px;
-    left: 0;
-    right: 0;
     display: flex;
     justify-content: center;
     align-items: center;
@@ -97,7 +92,6 @@ html, body {
     visibility: hidden;
     opacity: 0;
     transition: opacity 0.2s;
-    z-index: 100;
 }
 
 .text-editor-toolbar.active {
@@ -105,31 +99,6 @@ html, body {
     opacity: 1;
 }
 
-/* 图片编辑器工具栏 - 与文本编辑器共享位置 */
-.image-editor-toolbar {
-    position: absolute;
-    top: 49px;
-    left: 0;
-    right: 0;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    gap: 8px;
-    padding: 10px 16px;
-    background: #fff;
-    border-bottom: 1px solid #e0e0e0;
-    flex-shrink: 0;
-    visibility: hidden;
-    opacity: 0;
-    transition: opacity 0.2s;
-    z-index: 100;
-}
-
-.image-editor-toolbar.active {
-    visibility: visible;
-    opacity: 1;
-}
-
 .toolbar-btn {
     width: 40px;
     height: 40px;