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

* {
  margin: 0;
}

html, body {
  height: 100%;
}

.fs-16 {
  font-size: 16px;
}

.fs-24 {
  font-size: 24px;
}

.fs-48 {
  font-size: 48px;
}

.mt-10 {
  margin-top: 10px;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

body {
  background: #ffffff;
  color: #333333;
  font-family: 'Open Sans', sans-serif;
  font-weight: 300;
  line-height: 1.5;
  margin: 0 auto;
  max-width: 800px;
  padding: 0 20px;
  -webkit-font-smoothing: antialiased;
}

h1, h2 {
  font-weight: inherit;
}