优化按钮样式

src/assets/css/base.css

@@ -357,7 +357,7 @@ li {
 	border-top: 1px solid #C6C6C6;
 	padding: 24px 40px 40px;
 }
-.dialog-delete-button, .el-message-box__btns button:nth-child(2) {
+.dialog-delete-button {
 	width: 144px;
 	height: 40px;
 	background: linear-gradient(180deg, #ec8a8a 0%, #FF3B31 100%);