Add tooltips on homepage

ui/static/home.css

@@ -10,6 +10,7 @@ section {
 	border: 2px solid black;
 	margin: 2rem;
 	padding: 1rem;
+	position: relative;
 }
 
 #join, #play, #new {
@@ -21,3 +22,40 @@ section {
 	color: red;
 	font-weight: bold;
 }
+
+.help::after {
+	content: "?";
+	font-weight: bold;
+	line-height: 1.5rem;
+}
+
+.help {
+	border: 2px solid;
+	border-radius: 50%;
+	display: flex;
+	justify-content: center;
+	width: 1.5rem;
+	height: 1.5rem;
+	position: absolute;
+	right: 0;
+	top: 0;
+	padding: 0;
+	background: none;
+	cursor: pointer;
+}
+
+.message {
+	position: absolute;
+	right: 1.5rem;
+	top: 0;
+	display: none;
+	z-index: 1;
+}
+
+.message.show {
+	display: block;
+	background-color: white;
+	border: 2px dotted black;
+	width: 50vw;
+	max-width: 20rem;
+}

ui/static/home.js

@@ -4,4 +4,17 @@ document.addEventListener("DOMContentLoaded", () => {
 		const code = joinForm.querySelector("input[name=\"code\"]").value;
 		joinForm.action = "/play/" + encodeURIComponent(code);
 	});
+	document.body.addEventListener("click", () => {
+		for (const help of document.querySelectorAll(".message.show")) {
+			help.classList.remove("show");
+		}
+	});
+	const helps = document.getElementsByClassName("help");
+	for (const help of helps) {
+		help.addEventListener("click", (e) => {
+			e.stopPropagation();
+			console.log(e.target);
+			e.target.parentElement.querySelector(".message").classList.toggle("show");
+		})
+	}
 });