Remove bootstrap grid dependency

static/style.css

+html {
+  box-sizing: border-box;
+}
+
+*, ::after, ::before {
+  box-sizing: inherit;
+}
+
 body {
   position: absolute;
   top: 0;

views/index.ejs

@@ -8,7 +8,6 @@
     <meta property="og:description" content="Soutenez La Quadrature du Net !" />
     <meta property="og:url" content="http://<%= host %>?<%= imageParams %>" />
     <meta property="og:image" content="http://<%= host %>/generate.png?<%= imageParams %>" />
-    <link rel="stylesheet" href="./bootstrap-grid.min.css" />
     <link rel="stylesheet" href="./font-awesome.min.css" />
     <link rel="stylesheet" href="./style.css" />
     <title>Soutenez La Quadrature du Net !</title>