add all frontend files

node_modules/@rc-component/trigger/assets/index/Mask.less

@@ -0,0 +1,65 @@
+.@{triggerPrefixCls} {
+  &-mask {
+    position: fixed;
+    top: 0;
+    right: 0;
+    left: 0;
+    bottom: 0;
+    background-color: rgb(55, 55, 55);
+    background-color: rgba(55, 55, 55, 0.6);
+    height: 100%;
+    filter: alpha(opacity=50);
+    z-index: 1050;
+
+    &-hidden {
+      display: none;
+    }
+  }
+
+  .fade-effect() {
+    animation-duration: 0.3s;
+    animation-fill-mode: both;
+    animation-timing-function: cubic-bezier(0.55, 0, 0.55, 0.2);
+  }
+
+  &-fade-enter,
+  &-fade-appear {
+    opacity: 0;
+    .fade-effect();
+    animation-play-state: paused;
+  }
+
+  &-fade-leave {
+    .fade-effect();
+    animation-play-state: paused;
+  }
+
+  &-fade-enter&-fade-enter-active,
+  &-fade-appear&-fade-appear-active {
+    animation-name: rcTriggerMaskFadeIn;
+    animation-play-state: running;
+  }
+
+  &-fade-leave&-fade-leave-active {
+    animation-name: rcDialogFadeOut;
+    animation-play-state: running;
+  }
+
+  @keyframes rcTriggerMaskFadeIn {
+    0% {
+      opacity: 0;
+    }
+    100% {
+      opacity: 1;
+    }
+  }
+
+  @keyframes rcDialogFadeOut {
+    0% {
+      opacity: 1;
+    }
+    100% {
+      opacity: 0;
+    }
+  }
+}

node_modules/@rc-component/trigger/assets/index/Mobile.less

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+.@{triggerPrefixCls} {
+  &-mobile {
+    transition: all 0.3s;
+    position: fixed;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    top: auto;
+
+    &-fade {
+      &-appear,
+      &-enter {
+        &-start {
+          transform: translateY(100%);
+        }
+      }
+
+      &-leave {
+        &-active {
+          transform: translateY(100%);
+        }
+      }
+    }
+  }
+}