index.css

* {
  box-sizing: border-box;
}

@font-face {
  font-family: 'Bree';
  src: url('BreeSerif-Regular.otf');
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Bree';
}

h1, h2 {
  font-weight: normal;
}

h1 {
  margin: 0;
  padding: 0;
  font-size: 4em;
  font-weight: normal;
}

hr {
  border: 3px solid white;
}

.wrapper {
  display: flex;
  flex-direction: column;
}
.left {
  width: 100%;
  background-color: maroon;
}
.right {
  width: 100%;
}

.left-wrapper {
  margin: 40px;
  color: white;
}

.editions a {
  color: white;
}

.right-wrapper {
  margin: 60px 40px;
  color: black;
  font-size: 1.2em;
}

.talk {
  color: black;
}

.speaker {
  color: gray;
}

.align-right {
  text-align: right;
  margin-bottom: 20px;
}

.block {
  margin: 10px 0;
}

@media (min-width: 800px) {
  .wrapper {
    display: flex;
    flex-direction: row;
  }
  .left-wrapper {
    margin: 120px;
    color: white;
  }
  .right-wrapper {
    margin: 60px 80px;
    color: black;
    font-size: 1.2em;
  }
  h1 {
    font-size: 4em;
  }
  .left {
    width: 60%;
    height: 100vh;
    background-color: maroon;
  }
  .right {
    width: 50%;
    height: 100vh;
    overflow: scroll;
  }
}

@media (min-width: 1100px) {
  h1 {
    font-size: 6em;
  }
}