<style> 
.version {
	height: 25px;
    width: 200px;
    border-radius: 5px;
    border: 1px solid #ddd;
}
</style>
<select class="version" id="version" onchange="showContent()">
    <option value="6.0.0">6.0.0</option>
</select>
<script> 
function showContent() {
	var dropdown = document.getElementById("version"); 
	var tabs = document.getElementsByClassName("rwui_tab_content");
	for (var i = 0; i < tabs.length; i++) {
		if (tabs[i].getAttribute("data-name") == dropdown.value) {
			tabs[i].style.display = "";
		}
		else {
			tabs[i].style.display = "none";
		}
	}
}
</script>

Release Date: June 23, 2021

<script>
	var tabs = document.getElementsByClassName("rwui_tab_content");
	for (var i = 0; i < tabs.length; i++) {
		if (tabs[i].getAttribute("data-name") == "6.0.0") {
			tabs[i].style.display = "";
		}
		else {
			tabs[i].style.display = "none";
		}
	}
</script>