body {
  background-color: #333;
  color: #fff;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  margin: 0;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.container {
  width: 100vw;
  height: 100vh;
}

h1 {
  color: #fff;
}

section {
  display: flex;
  flex-direction: column;
  height: 690px;
}

.btn-danger {
  background-color: #00c362;
  transition: all 0.3s;
  border: 0 solid #00c362;
}

.btn-danger:hover,
.btn-danger:focus {
  background-color: #fff;
  color: #00c362;
  border: 0 solid #00c362;
}