* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  touch-action: manipulation;
}
html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
body {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2d3436;
  position: fixed;
}
.container {
  width: 94vw;
  max-width: 800px;
  padding: 20px;
  box-sizing: border-box;
  position: relative;
}