*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  max-width: 768px;
  min-height: 100vh;
  line-height: 1.5;
  margin: 0 auto;
  position: relative;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  width: 100%;
}

img[alt="footer"] {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 768px;
}

img[alt="cs"] {
  position: fixed;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  width: 80px;
}