src/index.scss

html, body, #root {
  margin: 0;
  height: 100%;
  font-family: 'Open Sans', sans-serif;
}

body, h1, h2, h3 {
  font-weight: 300
}

a {
  color: white;
  text-decoration: none;

  &:hover {
    color: #5aadbb;
  }
}

.main-container {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.main {
  flex: 1;
  display: flex;
  flex-direction: row;

  .content {
    display: flex;
    flex: 1;
    flex-direction: column;
    flex-basis: 90%;
    background: darken(grey, 25);
    padding: 20px;
  }
}

.header {
  display: flex;
  align-items: center;
  background-color: #1f1f1f;
}
.header-title {
  flex: 1;
  font-size: 1.5rem;
  margin: 1rem;
}
.header-date {
  flex: 1;
  text-align: right;
  margin: 1rem;
  white: white;
}

.footer {
  padding: 0.5rem;
  font-size: 1rem;
  background-color: #1f1f1f;
  text-align: center;
  color: white;
}