Compatibility with screen reader

static/index.html

@@ -47,11 +47,11 @@
 				<a href="/about.md" class="logo"></a>
 			</div>
 			<div id="box2">
-				<div class="save function"></div>
+				<button class="save function button-picture">Save</button>
-				<div class="new function"></div>
+				<button class="new function button-picture">New</button>
-				<div class="duplicate function"></div>
+				<button class="duplicate function button-picture">Duplicate & Edit</button>
-				<div class="raw function"></div>
+				<button class="raw function button-picture">Just Text</button>
-				<div class="twitter function"></div>
+				<button class="twitter function button-picture">Twitter</button>
 			</div>
 			<div id="box3" style="display:none;">
 				<div class="label"></div>