body{margin:0}.puzzle-editor-page{padding:1rem}.training-page{box-sizing:border-box;min-height:100vh;padding:1rem;text-align:center}.training-page h1{margin:0 0 .5rem;font-size:1.25rem}.board-wrapper{width:min(90vw,calc(100vh - 160px),600px);margin:0 auto}