#canvas{touch-action:none;cursor:crosshair;border:1px solid #416275}#run{background:#77d8ff;color:#07121b;font-weight:700}nav a{align-self:center}select{max-width:100%}@media(max-width:520px){header{flex-direction:column;padding:1rem}main{padding:1rem}section{padding:1rem}.actions button{flex:1 1 auto}h1{font-size:2.6rem}}