first commit

public/static/css/loading.css

@@ -0,0 +1,49 @@
+body {
+  overflow: hidden;
+}
+.init-box {
+  width: 100vw;
+  height: 100vh;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+.init-loading {
+  width: 40px;
+  height: 40px;
+  display: flex;
+  justify-content: space-between;
+}
+.init-loading-rect {
+  background-color: #007aff;
+  height: 100%;
+  width: 15%;
+  animation: init-wave 1.2s infinite ease-in-out;
+}
+
+.init-loading-rect:nth-child(1) {
+  animation-delay: -1.2s;
+}
+.init-loading-rect:nth-child(2) {
+  animation-delay: -1.1s;
+}
+.init-loading-rect:nth-child(3) {
+  animation-delay: -1s;
+}
+.init-loading-rect:nth-child(4) {
+  animation-delay: -0.9s;
+}
+.init-loading-rect:nth-child(5) {
+  animation-delay: -0.8s;
+}
+
+@keyframes init-wave {
+  0%,
+  40%,
+  100% {
+    transform: scaleY(0.4);
+  }
+  20% {
+    transform: scaleY(1);
+  }
+}