body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #383838;
}

h1{
  margin: 0;
  padding: 0;
  font-size: 100%;
  color: #efefef;
}
h2{
  color: #f428ae;
}
a.contents{
  color: rgb(245, 242, 48);
  display: block;
  padding: 6px;
}

.gamecanvas {
  margin:0;
  margin-top: 50px;
  border:1px solid #383838
}

.container {
    display: flex;
    flex-direction: row;
}

.sidebar {
    color: #f428ae;
    width: 500px;
    margin-top: 20px;
    margin-right: 20px;
}

.challenge {
    border: 1px solid #b31b7e;
    background: #f428ae;
    padding: 12px;
    color: #ffffff;
}