* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  color: #fff;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  font-size: 14px;
  overflow: hidden;
}

button {
  font-family: inherit;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}