Fix the issue that the layout is awkward when box-sizing is set to 'border-box'

Author: thorikawa

templates/pace-theme-center-radar.tmpl.css

@@ -36,6 +36,10 @@
   border-color: `args.color || "#29d"` transparent transparent;
   border-radius: 50%;
 
+  -webkit-box-sizing: content-box;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+
   -webkit-animation: spin 1s linear infinite;
   -moz-animation: spin 1s linear infinite;
   -o-animation: spin 1s linear infinite;
@@ -54,6 +58,10 @@
   border-style: solid;
   border-color: `args.color || "#29d"` transparent transparent;
   border-radius: 50%;
+
+  -webkit-box-sizing: content-box;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
 }
 
 @-webkit-keyframes spin {