diff --git a/PHDemo/PHDemo/AlertVC.swift b/PHDemo/PHDemo/AlertVC.swift
index a27f5a6..a4d80df 100644
--- a/PHDemo/PHDemo/AlertVC.swift
+++ b/PHDemo/PHDemo/AlertVC.swift
@@ -69,6 +69,24 @@ class AlertVC: ListVC {
             }
         }
         list.add(title: "文字 + 按钮") { section in
+            section.add(title: "只有一段文字 + 无背景色按钮") {
+                Alert { alert in
+                    alert.config.boldTextFont = .systemFont(ofSize: 15)
+                    alert.config.buttonFont = .systemFont(ofSize: 15)
+                    alert.config.cardCornerRadius = 12
+                    
+                    alert.vm.title = "为了维护社区氛围，上麦用户需进行主播认证"
+                    let v = UIView()
+                    v.backgroundColor = UIColor("#F7F7F7")
+                    alert.add(subview: v).snp.makeConstraints { make in
+                        make.left.right.equalToSuperview()
+                        make.height.equalTo(1)
+                    }
+                    alert.add(spacing: 16)
+                    alert.add(action: "取消", style: .plain(textColor: UIColor("#939999")))
+                    alert.add(action: "确定", style: .plain(textColor: UIColor("#14cccc")))
+                }
+            }
             section.add(title: "只有一段文字 + 按钮") {
                 Alert { alert in
                     alert.vm.title = "只有一段文字"
@@ -247,13 +265,13 @@ class AlertVC: ListVC {
                     imgv.contentMode = .scaleAspectFill
                     imgv.clipsToBounds = true
                     imgv.layer.cornerRadiusWithContinuous = 12
-                    alert.add(subview: imgv).snp.makeConstraints { make in
+                    alert.add(action: imgv).snp.makeConstraints { make in
                         make.height.equalTo(120)
                     }
                     // seg
                     let seg = UISegmentedControl(items: ["开发", "测试", "预发", "生产"])
                     seg.selectedSegmentIndex = 0
-                    alert.add(subview: seg).snp.makeConstraints { make in
+                    alert.add(action: seg).snp.makeConstraints { make in
                         make.height.equalTo(40)
                         make.width.equalTo(400)
                     }
@@ -262,8 +280,8 @@ class AlertVC: ListVC {
                     slider.minimumValue = 0
                     slider.maximumValue = 100
                     slider.value = 50
-                    alert.add(subview: slider)
-                    alert.add(spacing: 24)
+                    alert.add(action: slider)
+                    alert.add(spacing: 24, for: alert.actionStack)
                     alert.add(action: "取消", style: .gray)
                 }
             }
@@ -275,7 +293,7 @@ class AlertVC: ListVC {
                     s1.minimumValue = 0
                     s1.maximumValue = 40
                     s1.value = Float(alert.config.cardCornerRadius ?? 16)
-                    alert.add(subview: s1).snp.makeConstraints { make in
+                    alert.add(action: s1).snp.makeConstraints { make in
                         make.height.equalTo(50)
                     }
                     if #available(iOS 14.0, *) {
@@ -287,7 +305,7 @@ class AlertVC: ListVC {
                         // Fallback on earlier versions
                     }
                     alert.config.actionAxis = .vertical
-                    alert.add(spacing: 24)
+                    alert.add(spacing: 24, for: alert.actionStack)
                     alert.add(action: "OK", style: .gray)
                 }
             }
diff --git a/Sources/ProHUD/Alert/AlertConvenienceLayout.swift b/Sources/ProHUD/Alert/AlertConvenienceLayout.swift
index aaf5eec..6ff2804 100644
--- a/Sources/ProHUD/Alert/AlertConvenienceLayout.swift
+++ b/Sources/ProHUD/Alert/AlertConvenienceLayout.swift
@@ -89,17 +89,30 @@ extension Alert: InternalConvenienceLayout {
     // MARK: 自定义控件
     
     @discardableResult public func add(subview: UIView) -> UIView {
+        contentStack.addArrangedSubview(subview)
+        if #available(iOS 11.0, *) {
+            if let last = contentStack.arrangedSubviews.last {
+                contentStack.setCustomSpacing(0, after: last)
+            }
+        }
+        return subview
+    }
+    
+    @discardableResult public func add(action subview: UIView) -> UIView {
         actionStack.addArrangedSubview(subview)
         return subview
     }
     
-    
     // MARK: 布局工具
     
     public func add(spacing: CGFloat) {
+        add(spacing: spacing, for: contentStack)
+    }
+    
+    public func add(spacing: CGFloat, for stack: UIStackView) {
         if #available(iOS 11.0, *) {
-            if let last = actionStack.arrangedSubviews.last {
-                actionStack.setCustomSpacing(spacing, after: last)
+            if let last = stack.arrangedSubviews.last {
+                stack.setCustomSpacing(spacing, after: last)
             }
         }
     }
diff --git a/Sources/ProHUD/Alert/AlertDefaultLayout.swift b/Sources/ProHUD/Alert/AlertDefaultLayout.swift
index e61d34b..69da7cc 100644
--- a/Sources/ProHUD/Alert/AlertDefaultLayout.swift
+++ b/Sources/ProHUD/Alert/AlertDefaultLayout.swift
@@ -106,7 +106,7 @@ extension Alert: DefaultLayout {
     
     func setDefaultAxis() {
         guard isViewDisplayed == false && config.actionAxis == nil else { return }
-        let count = actionStack.arrangedSubviews.count
+        let count = actionStack.arrangedSubviews.filter({ $0.isKind(of: UIControl.self )}).count
         guard count < 4 else { return }
         if isPortrait && count < 3 || !isPortrait {
             actionStack.axis = .horizontal
diff --git a/Sources/ProHUD/Core/Models/Action.swift b/Sources/ProHUD/Core/Models/Action.swift
index ebb1cc6..23775aa 100644
--- a/Sources/ProHUD/Core/Models/Action.swift
+++ b/Sources/ProHUD/Core/Models/Action.swift
@@ -28,6 +28,7 @@ open class Action: NSObject {
         case destructive // red button, background with systemRed
         case filled(color: UIColor) // background with custom color
         case light(color: UIColor) // light background with custom color, text with custom color
+        case plain(textColor: UIColor) // plain text
     }
     
     public private(set) var identifier: String?
diff --git a/Sources/ProHUD/Core/Views/Button.swift b/Sources/ProHUD/Core/Views/Button.swift
index 030bbb1..a5cfa8a 100644
--- a/Sources/ProHUD/Core/Views/Button.swift
+++ b/Sources/ProHUD/Core/Views/Button.swift
@@ -56,6 +56,11 @@ open class Button: UIButton {
         case .light(let color):
             setTitleColor(color, for: .normal)
             backgroundColor = color.withAlphaComponent(0.15)
+        case .plain(let textColor):
+            setTitleColor(textColor, for: .normal)
+            backgroundColor = .none
+            contentEdgeInsets.top = 0
+            contentEdgeInsets.bottom = 4
         }
     }