:root {
  --completition: 0%;
}

* {
  margin: 0;
  padding: 0;
}

body {
  background: #fff;
  font-family: "Poppins", sans-serif;
  font-weight: 200;
  font-size: 20px;
}

.section {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: transform 1s ease-out, display 0s 1s;
}

.section.unactive {
  transform: translateY(-100%);
}

main img {
  width: 50vh;
}

.button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  width: 250px;
  border-radius: 10px;
  cursor: pointer;
}

.button::before {
  content: " ";
  position: absolute;
  top: 5px;
  left: 0;
  height: 50px;
  width: 250px;
  border-radius: 10px;
  z-index: -1;
}

.button:active {
  top: 5px;
}

.button:active::before {
  top: 0;
}

.button span {
  font-size: 2rem;
  font-weight: bold;
  color: white;
}

.start-button {
  background-color: #8ee000;
}

.start-button::before {
  background-color: #74c70c;
}

.progress-bar {
  margin: 50px;
  position: relative;
  width: 90%;
  height: 20px;
  background: #cfcfcf;
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar::before {
  content: " ";
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: var(--completition);
  height: 100%;
  background: #74c70c;
  border-radius: 10px;
  transition: all 0.5s ease-out;
}

.question {
  justify-content: start;
}

.question h1,
.sentence {
  align-self: stretch;
  margin-left: 5%;
}

.sentence {
  margin-top: 20px;
  width: 50%;
  border-bottom: solid 2px #cfcfcf;
}

.sentence p {
  margin: 0;
  font-size: 1.5rem;
}

.answer {
  margin-top: 50px;
  border-bottom: dotted 2px #cfcfcf;
}

.continue {
  position: absolute;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 30vh;
}

.continue.unactive {
    display: none;
}

.continue.correct {
  background-color: #8ee00088;
}

.continue.correct h2 {
  color: #74c70c;
  margin: 20px;
}

.continue.correct h2:nth-child(2) {
    display: none;
}


.continue.correct .continue-button {
  background-color: #8ee000;
}

.continue.correct .continue-button::before {
  background-color: #74c70c;
}

.continue.wrong {
  background-color: #d3313188;
}

.continue.wrong h2 {
  color: #e53b3b;
  margin: 20px;
}

.continue.wrong h2:nth-child(1) {
  display: none;
}

.continue.wrong .continue-button {
  background-color: #e53b3b;
}

.continue.wrong .continue-button::before {
  background-color: #d33131;
}