app.css

/* Your styles should be mobile-first and responsive */

/** 
  * If you are unclear on how to utilize a mobile-first, responsive technique to write your CSS, here is an example: 
  *
  * https://github.com/andreacardybailey/responsive_example/blob/master/styles/responsive-base.css 
  *
*/

* {
  box-sizing: border-box;
}

body {
  background-color: gray;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  display: flex;
  justify-content: center;
  margin-top: 40px;
  text-align: center;
  font-family: 'Permanent Marker';
  color: whitesmoke;
  text-shadow: 2px 2px 4px rgba(0,0,0);
  font-size: 18px;
}

main {
  font-family: 'Inter';
}

.home-screen {
  text-align: center;
  background-color: rgba(255, 255, 255, 0.692);
  border-radius: 5px;
  padding-top: 1px;
  padding-bottom: 1px;
  padding-left: 10px;
  padding-right: 10px;
  margin-bottom: 10px;
}

.question-score-number {
  text-align: center;
  background-color: rgba(255, 255, 255, 0.692);
  border-radius: 5px;
  padding-top: 1px;
  padding-bottom: 1px;
  margin-bottom: 10px;
  line-height: 0.5rem;
}

.questions {
  display: flex;
  flex-direction: column;
  line-height: 1.5rem;
}

fieldset {
  border: none;
  background-color: rgba(62, 210, 255, 0.521);
  border-radius: 5px;
  margin-bottom: 10px;
}

.last-screen {
  background-color: rgba(255, 255, 255, 0.692);
  border-radius: 5px;
  padding-top: 1px;
  padding-bottom: 1px;
  padding-right: 20px;
  padding-left: 20px;
  margin-bottom: 20px;
}

.incorrect-answer {
  background-color: rgba(255, 0, 0, 0.534);
  color: white;
  border-radius: 5px;
  padding-top: 1px;
  padding-bottom: 1px;
  padding-left: 10px;
  padding-right: 10px;
  margin-bottom: 10px;
  text-align: center; 
}

.correct-answer {
  background-color:rgba(62, 210, 255, 0.521);
  border-radius: 5px;
  padding-top: 15px;
  padding-bottom: 1px;
  padding-left: 10px;
  padding-right: 10px;
  margin-bottom: 10px;
  text-align: center;
}

button {
  position: absolute;
  left: 50%;
  transform: translate(-50%);
}