diff --git a/css/chess.css b/css/chess.css
index 9ebcff4..18ce72c 100644
--- a/css/chess.css
+++ b/css/chess.css
@@ -1,215 +1,217 @@
 body {
-	 font-family: 'Roboto', sans-serif;
+   font-family: 'Roboto', sans-serif;
 }
 
 h1 {
-	 font-family: 'Vollkorn', serif;
-	 font-size: 2em;
-	 margin-bottom: 0;
+   font-family: 'Vollkorn', serif;
+   font-size: 2em;
+   margin-bottom: 0;
 }
 
 .media-button-svg {
-	 width: 12pt;
-	 height: 12pt;
+   width: 12pt;
+   height: 12pt;
 }
 
 button:disabled .silhouette {
-	 fill: #c0c0c0;
+   fill: #c0c0c0;
 }
 
 #content {
-	 display: flex;
-	 flex-flow: row nowrap;
+   display: flex;
+   flex-flow: row nowrap;
 }
 
 /*@media only screen and (max-width: 8in) {*/
 @media only screen and (max-aspect-ratio: 4/3) {
-	 #content {
-			flex-flow: column nowrap;
-	 }
+   #content {
+      flex-flow: column nowrap;
+   }
 }
 
 #cb_outer {
-	 width: 100%;
-	 max-width: calc(100vh - 4em);
+   width: 100%;
+   max-width: calc(100vh - 4em);
 }
 
 #cb_container {
-	 position: relative;
-	 width: 100%;
-	 padding-top: 100%;
+   position: relative;
+   width: 100%;
+   padding-top: 100%;
 }
 
 #cb_inner {
-	 position: absolute;
-	 top: 0;
-	 left: 0;
-	 bottom: 0;
-	 right: 0;
+   position: absolute;
+   top: 0;
+   left: 0;
+   bottom: 0;
+   right: 0;
 }
 
 #cb_board {
-	 position: relative;
-	 width: 100%;
-	 height: 100%;
-	 border: 1px solid black;
-	 border-collapse: collapse;
-	 padding-top: 100%;
+   position: relative;
+   width: 100%;
+   height: 100%;
+   border: 1px solid black;
+   border-collapse: collapse;
+   padding-top: 100%;
 }
 
 #cb_board tr {
-	 position: relative;
+   position: relative;
 }
 
 #cb_board td {
-	 background-clip: padding-box;
-	 position: relative;
+   background-clip: padding-box;
+   position: relative;
 }
 
 #cb_light_name, #cb_dark_name {
-	 width: 8em;
+   width: 8em;
 }
 
 #cb_control_container {
-	 margin-left: 1em;
+   margin-left: 1em;
 }
 
 #cb_controls, #cb_names, #cb_game, #cb_navigate {
-	 margin-top: 0.5em;
+   margin-top: 0.5em;
 }
 
 #cb_history {
-	 max-width: 7.5in;
+   max-width: 7.5in;
 }
 
 #cb_reset, #cb_pass {
-	 display: none;
+   display: none;
 }
 
 .cb-square {
-	 position: relative;
-	 width: calc((100% - 16pt) / 8);
-	 height: calc((100% - 16pt) / 8);
-	 border: 1px solid black;
-	 padding: 0;
+   position: relative;
+   width: calc((100% - 16pt) / 8);
+   height: calc((100% - 16pt) / 8);
+   border: 1px solid black;
+   padding: 0;
 }
 
 .cb-horiz-label {
-	 position: relative;
-	 width: calc((100% - 16pt) / 8);
-	 height: 8pt;
-	 border: 1px solid black;
-	 padding: 0;
+   position: relative;
+   width: calc((100% - 16pt) / 8);
+   height: 8pt;
+   border: 1px solid black;
+   padding: 0;
 }
 
 .cb-horiz-label div {
-	 position: absolute;
-	 top: calc(50% - (1em / 2));
-	 left: 0;
-	 bottom: 0;
-	 right: 0;
-	 font-size: 6pt;
-	 line-height: 6pt;
-	 text-align: center;
+   position: absolute;
+   top: calc(50% - (1em / 2));
+   left: 0;
+   bottom: 0;
+   right: 0;
+   font-size: 6pt;
+   line-height: 6pt;
+   text-align: center;
 }
 
 .cb-vert-label {
-	 position: relative;
-	 width: 8pt;
-	 height: calc((100% - 16pt) / 8);
-	 border: 1px solid black;
-	 padding: 0;
+   position: relative;
+   width: 8pt;
+   height: calc((100% - 16pt) / 8);
+   border: 1px solid black;
+   padding: 0;
 }
 
 .cb-vert-label div {
-	 position: absolute;
-	 top: calc(50% - (1em / 2));
-	 left: 0;
-	 bottom: 0;
-	 right: 0;
-	 font-size: 6pt;
-	 line-height: 6pt;
-	 text-align: center;
-	 vertical-align: middle;
+   position: absolute;
+   top: calc(50% - (1em / 2));
+   left: 0;
+   bottom: 0;
+   right: 0;
+   font-size: 6pt;
+   line-height: 6pt;
+   text-align: center;
+   vertical-align: middle;
 }
 
 .cb-archive .cb-horiz-label, .cb-archive .cb-vert-label, .cb-archive .cb-corner {
-	 background-color: #ffeeee;
+   background-color: #ffeeee;
 }
 
 .cb-lt-bg {
-	 background-color: #FFFFF0;
+   background-color: #FFFFF0;
 }
 
 .cb-lt-bg.cb-start, .cb-lt-bg.cb-end {
-	 background-color: #CCFFC0;
+   background-color: #CCFFC0;
 }
 
 .cb-lt-bg.cb-legal {
-	 background-color: #E6E6F2;
+   background-color: #E6E6F2;
 }
 
 .cb-dk-bg {
-	 background-color: #F5DEB3;
+   background-color: #F5DEB3;
 }
 
 .cb-dk-bg.cb-start, .cb-dk-bg.cb-end {
-	 background-color: #D0E398;
+   background-color: #D0E398;
 }
 
 .cb-dk-bg.cb-legal {
-	 background-color: #C4B2C2;
+   background-color: #C4B2C2;
 }
 
 .cb-phantom {
-	 position: absolute;
-	 top: 0;
-	 left: 0;
-	 width: 100%;
-	 height: 100%;
-	 background-color: rgba(128,128,128,0.5);
+   position: absolute;
+   top: 0;
+   left: 0;
+   width: 100%;
+   height: 100%;
+   background-color: rgba(128,128,128,0.5);
 }
 
 .cb-dk-piece {
-	 position: absolute;
-	 top: 17.5%;
-	 left: 47.5%;
-	 width: 55%;
-	 height: 65%;
+   position: absolute;
+   top: 17.5%;
+   left: 47.5%;
+   width: 55%;
+   height: 65%;
 }
 
 .cb-lt-piece {
-	 position: absolute;
-	 top: 17.5%;
-	 left: -2.5%;
-	 width: 55%;
-	 height: 65%;
+   position: absolute;
+   top: 17.5%;
+   left: -2.5%;
+   width: 55%;
+   height: 65%;
 }
 
 #cb_phantom > .cb-dk-piece {
-	 top: 22.5%;
-	 left: 22.5%;
+   top: 22.5%;
+   left: 22.5%;
 }
 
 #cb_phantom > .cb-lt-piece {
-	 top: 22.5%;
-	 left: 22.5%;
+   top: 22.5%;
+   left: 22.5%;
 }
 
 .noselect {
-	 cursor: default;
-	 -webkit-touch-callout: none;
-	 -webkit-user-select: none;
-	 -khtml-user-select: none;
-	 -moz-user-select: none;
-	 -ms-user-select: none;
-	 user-select: none;
+   cursor: default;
+   -webkit-touch-callout: none;
+   -webkit-user-select: none;
+   -khtml-user-select: none;
+   -moz-user-select: none;
+   -ms-user-select: none;
+   user-select: none;
 }
 
 #cb_board .cb-piece.ui-draggable {
-	 cursor: grab;
+   cursor: grab;
 }
 
 #cb_board .cb-piece.ui-draggable-disabled {
-	 cursor: default;
+   cursor: default;
 }
+
+/* vim:set expandtab sw=3 ts=8: */