New CSS files

New CSS files that come from the old styles.css
Minor bugfixes
diff --git a/css/dialog.css b/css/dialog.css
new file mode 100644
index 0000000..723795d
--- /dev/null
+++ b/css/dialog.css
@@ -0,0 +1,76 @@
+#dialog {

+	position: absolute;

+	top: 0px;

+	left: 0px;

+	width: 300px;

+	height: 100%;

+	background-color: white;

+	color: black;

+	z-index: 120;

+	overflow-y: auto;

+}

+

+#backdrop {

+	display: none;

+	position: absolute;

+	top: 0;

+	left: 0;

+	width: 100%;

+	height: 100%;

+	background-color: rgba(0, 0, 0, .5);

+	z-index: 110;

+}

+

+#dialog-vertex, #dialog-edge {

+	padding: 8px;

+	user-select: auto;

+}

+

+#dialog h2 {

+	font-weight: bold;

+	font-size: 20px;

+}

+

+#dialog h3 {

+	font-weight: bold;

+	font-size: 16px;

+	margin-bottom: 0;

+}

+

+#quit-dialog, #quit2-dialog {

+	position: absolute;

+	top: 8px;

+	right: 8px;

+}

+

+#min-dialog, #max-dialog {

+	position: absolute;

+	top: 8px;

+	right: 48px;

+}

+

+#min-dialog {

+	display: none;

+}

+

+#summary-dialog {

+	position: absolute;

+	top: 0px;

+	left: 0px;

+	width: 100%;

+	height: 100px;

+	background-color: white;

+	color: black;

+	z-index: 120;

+}

+

+#summary-vertex {

+	padding: 8px;

+	user-select: auto;

+}

+

+#summary-dialog h2 {

+	font-weight: bold;

+	font-size: 20px;

+	margin: 0;

+}
\ No newline at end of file