Изменения от Главреда ГитЖС | Changes of GitJS Glavred

🙈.css

@@ -0,0 +1,48 @@
+.центрирование-на-экране
+{
+    position: absolute;
+    left: 50%;
+    top: 50%;
+    transform: translateX(-50%) translateY(-50%);
+}
+
+.фон-экрана
+{
+    background-color: white;
+    position: fixed;
+    left: 0;
+    top: 0;
+    right: 0;
+    bottom: 0;
+}
+
+/* https://loading.io/css/ */
+.lds-dual-ring
+{
+  display: inline-block;
+  width: 80px;
+  height: 80px;
+}
+.lds-dual-ring:after
+{
+  content: " ";
+  display: block;
+  width: 64px;
+  height: 64px;
+  margin: 8px;
+  border-radius: 50%;
+  border: 3px solid black;
+  border-color: black transparent black transparent;
+  animation: lds-dual-ring 1.2s linear infinite;
+}
+@keyframes lds-dual-ring
+{
+  0%
+  {
+    transform: rotate(0deg);
+  }
+  100%
+  {
+    transform: rotate(360deg);
+  }
+}