feat: Made additions to grades. Closes #4

src/app/admin-view/grades/attendence-summary/attendence-summary.component.scss

@@ -0,0 +1,34 @@
+@use 'sass:list';
+
+#guide {
+    margin: 1em
+}
+
+#legend {
+    display: flex;
+    justify-self: center;
+    * {
+        margin: 2px;
+    }
+    gap: 3ch;
+}
+
+.circle {
+    &::before {
+        border-radius: 7.5%;
+        width: 2.5ch;
+        height: 2.5ch;
+        display: inline-block;
+        content: "";
+        vertical-align: middle;
+        margin-right: 3px;
+    }
+
+    $list: (red, yellow, green);
+
+    @for $n from 1 through 3 {
+        &:nth-of-type(#{$n})::before {
+            background-color: nth($list, $n);
+        }
+    }
+}