Added a lot of components

src/app/arrow-scroll-down/arrow-scroll-down.component.scss

@@ -0,0 +1,38 @@
+.arrow {
+  position: absolute;
+  transform: translate(-50%, -50%) rotate(0deg);
+  cursor: pointer;
+}
+
+.arrow span {
+  display: block;
+  width: 1.5vw;
+  height: 1.5vw;
+  border-bottom: 5px solid white;
+  border-right: 5px solid white;
+  transform: rotate(45deg);
+  margin: -10px;
+  animation: animate 2s infinite;
+}
+
+.arrow span:nth-child(2) {
+  animation-delay: -0.2s;
+}
+
+.arrow span:nth-child(3) {
+  animation-delay: -0.4s;
+}
+
+@keyframes animate {
+  0% {
+    opacity: 0;
+    transform: rotate(45deg) translate(-20px, -20px);
+  }
+  50% {
+    opacity: 1;
+  }
+  100% {
+    opacity: 0;
+    transform: rotate(45deg) translate(20px, 20px);
+  }
+}