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

html {
  font-size: 16px;
  line-height: 1.2;
  background: #fff;
}
body {
  padding-bottom: 50px;
}
footer {
  display: flex;
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 1;
}
button {
  flex: 1;
  height: 50px;
  outline: none;
  font-size: 14px;
}