Add some styling.

Ticket #40

src/Hackspace/Bundle/CalciferBundle/Resources/assets/css/main.scss

@@ -1,36 +1,17 @@
 body {
-  margin: 40px 0 0;
+  margin: 50px 0 0;
 }
 
-header {
-  top: 0;
-}
-
-header .ui.grid > .column, .title.ui.grid > .column {
-  margin-top: 0;
-  margin-bottom: 0;
-}
-
-.box h2 {
-  font-size: 1rem !important;
-}
-
-a .icon {
-  text-decoration: none;
-}
-
-a, a:hover, a:visited {
-  color: #000000;
-}
-
-a:hover {
-  text-decoration: none;
-}
-
-#mission-statement {
-  overflow: hidden;
-
-  img {
+#main {
+  &>.basic.segment:first-child {
     margin-bottom: 0;
   }
-}
+  &>.basic.segment:last-child {
+    margin-top: 0;
+    padding-top: 0;
+  }
+}
+
+h1.ui.green.block.dividing.header {
+  background-color: #ffffff;
+}