html,
body {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
li,
ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

img {
  display: block;
}

button {
  border: none;
}