html {
  color: $black;
  margin: 0 0 40px;
  font: 400 13px/1.4 'Open Sans', arial, sans-serif;
}

* {
  box-sizing: border-box;
  outline: none;
}

button,
.button {
  &:hover {
    opacity: .8;
  }
}

label,
button,
input {
  cursor: pointer;
}

strong, b {
  font-weight: 600;
}

h1 {
  text-align: center;
  font-size: 32px;
  font-weight: 600;
  margin-top: 40px;
}

h4,
h3 {
  display: block;
  width: 100%;
  margin: 40px 0 10px;
  font-size: 16px;
  font-weight: 600;
}