add guest auth pages

frontend/website/src/styles/main.css

@@ -0,0 +1,50 @@
+:root {
+  color: #1b2924;
+  background: #f3f1eb;
+  font-family:
+    Inter,
+    ui-sans-serif,
+    -apple-system,
+    BlinkMacSystemFont,
+    'Segoe UI',
+    sans-serif;
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html {
+  min-width: 320px;
+  min-height: 100%;
+  background: #f3f1eb;
+}
+
+body {
+  min-width: 320px;
+  min-height: 100%;
+  margin: 0;
+}
+
+button,
+input {
+  font: inherit;
+}
+
+button,
+a {
+  -webkit-tap-highlight-color: transparent;
+}
+
+a {
+  color: inherit;
+}
+
+#app {
+  min-height: 100vh;
+  min-height: 100svh;
+}