init 5S article and refacto pull system

5s.css

@@ -0,0 +1,41 @@
+:root {
+  --color: var(--primary-color);
+}
+
+*:not(td):not(th) {
+  border-radius: 0.5rem;
+}
+
+body {
+  font-size: 28px;
+  font-family: 'Noto Serif', serif;
+  margin: 0;
+}
+
+header {
+  text-align: center;
+  color: var(--primary-color);
+}
+
+main {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  gap: 0;
+  margin: 1rem 1rem 0;
+  color: var(--color);
+}
+
+.meaning {
+  color: #9f9a9a;
+  font-weight: 100;
+  font-size: 1rem;
+}
+
+.meaning::before {
+  content: '(';
+}
+
+.meaning::after {
+  content: ')';
+}