structure adjustment

lib/ui/css/tooltip.scss

@@ -0,0 +1,51 @@
+.tooltip-color {
+    background-color: #fff;
+    color: #323130;
+    border-color: rgba(204, 204, 204, .8);
+    outline: none;
+}
+
+.tooltip-wrapper {
+    position: absolute;
+    word-wrap: break-word;
+    height: auto;
+    text-align: left;
+    z-index: 250;
+    min-width: 45px;
+    max-width: 480px;
+    min-height: 32px;
+    border-radius: 2px;
+    box-shadow: 0 3.2px 7.2px 0 rgba(0, 0, 0, .13), 0 0.6px 1.8px 0 rgba(0, 0, 0, .11);
+    transition: visibility 0s linear 120ms, opacity 120ms ease;
+
+    >.tooltip-pointer {
+        box-sizing: border-box;
+        box-shadow: 0 5px 15px 2px rgba(0, 0, 0, .3);
+        border: 1px solid #fff;
+        z-index: -1;
+        width: 16px;
+        height: 16px;
+        position: absolute;
+        left: calc(50% - 8px);
+        bottom: -8px;
+        transform: rotate(-45deg);
+        transform-origin: center;
+    }
+
+    >.tooltip-curtain {
+        position: absolute;
+        width: 100%;
+        height: 100%;
+        z-index: -1;
+    }
+
+    >.tooltip-content {
+        font-size: var(--font-smaller-size);
+        line-height: 1rem;
+        white-space: normal;
+        overflow: hidden;
+        margin: 8px;
+        height: calc(100% - 16px);
+        user-select: none;
+    }
+}