added icons and moved to the css directory

css/code_slash.css

@@ -0,0 +1,36 @@
+@charset "UTF-8";
+
+i.icon.code.slash {
+	position: relative;
+	width: 2px;
+	height: 16px;
+	box-sizing: border-box;
+	display: block;
+	transform: rotate(15deg);
+	background: currentColor;
+
+	&::after,
+	&::before {
+		position: absolute;
+		content: "";
+		width: 8px;
+		height: 8px;
+		box-sizing: border-box;
+		display: block;
+		transform: rotate(-60deg);
+	}
+
+	&::before {
+		top: 5px;
+		left: -8px;
+		border-top: 2px solid;
+		border-left: 2px solid;
+	}
+
+	&::after {
+		top: 3px;
+		right: -8px;
+		border-right: 2px solid;
+		border-bottom: 2px solid;
+	}
+}