Split LESS into more granular files, Vimeo fixes

demo/src/less/components/buttons.less

@@ -10,12 +10,10 @@
     vertical-align: middle;
     align-items: center;
     padding: (@spacing-base * 0.75);
-
     border-radius: @border-radius-base;
     box-shadow: 0 1px 1px fade(#000, 10%);
     background: #fff;
     border: 0;
-
     color: @gray;
     user-select: none;
     font-weight: @font-weight-bold;
@@ -56,7 +54,6 @@
         right: 100%;
         top: 50%;
         transform: translateY(-50%);
-
         border: @arrow-size solid transparent;
         border-right-color: #fff;
         border-left-width: 0;

demo/src/less/components/header.less

@@ -7,8 +7,8 @@ header {
     text-align: center;
 
     p {
-        .font-size(@font-size-large);
         margin-bottom: (@spacing-base * 1.5);
+        .font-size(@font-size-large);
     }
 
     @media @mq-md {

demo/src/less/components/players.less

@@ -14,6 +14,7 @@ video {
     border-radius: @border-radius-base;
     box-shadow: 0 2px 5px fade(#000, 20%);
 }
+
 .plyr__video-wrapper::after {
     content: '';
     pointer-events: none;