feat:#47 updated primevue theme for sass

frontend/public/primevue-sass-theme/theme-base/components/misc/_scrolltop.scss

@@ -0,0 +1,60 @@
+// core
+.p-scrolltop {
+    position: fixed;
+    bottom: 20px;
+    right: 20px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.p-scrolltop-sticky {
+    position: sticky;
+}
+
+.p-scrolltop-sticky.p-link {
+    margin-left: auto;
+}
+
+.p-scrolltop-enter-from {
+    opacity: 0;
+}
+
+.p-scrolltop-enter-active {
+    transition: opacity 0.15s;
+}
+
+.p-scrolltop.p-scrolltop-leave-to {
+    opacity: 0;
+}
+
+.p-scrolltop-leave-active {
+    transition: opacity 0.15s;
+}
+
+// theme
+.p-scrolltop {
+    width: $scrollTopWidth;
+    height: $scrollTopHeight;
+    border-radius: $scrollTopBorderRadius;
+    box-shadow: $inputOverlayShadow;
+    transition: $actionIconTransition;
+
+    &.p-link {
+        background: $scrollTopBg;
+
+        &:hover {
+            background: $scrollTopHoverBg;
+        }
+    }
+
+    .p-scrolltop-icon {
+        font-size: $scrollTopFontSize;
+        color: $scrollTopTextColor;
+
+        &.p-icon {
+            width: $scrollTopFontSize;
+            height: $scrollTopFontSize;
+        }
+    }
+}