body {
  font-family: arial, sans-serif;
  font-size: 16px;
}

a {
  cursor: pointer;
}

button {
  box-sizing: border-box;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 3px;
  border: solid 1px #0096d6;
  background: linear-gradient(#0096d6, #0081b8);
  color: #fff;
}

button:hover,
button:focus,
button:active {
  background: #0081b8;
  border: solid 1px #0081b8;
}

section {
  position: relative;
  width: 100%;
}

article {
  position: relative;
  margin: 0 auto;
  float: left;
}