html, body { position: relative; width: 100%; height: 100%; } body { background-color: #111; color: #999; margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; font-size: 1.5em; } a { color: rgb(0,100,200); text-decoration: none; } a:hover { text-decoration: underline; } a:visited { color: rgb(0,80,160); } label { display: block; } input, button, select, textarea { font-family: inherit; font-size: inherit; padding: 0.4em; margin: 0 0 0.5em 0; box-sizing: border-box; border: 1px solid #ccc; border-radius: 2px; } input:disabled { color: #ccc; } input[type="range"] { height: 0; } button { background-color: #f4f4f4; outline: none; } button:active { background-color: #ddd; } button:focus { border-color: #666; }