*{
  margin: 0;
}
body{
  width: 90%;
  margin: 20px auto;
  font-family: Arial, Helvetica, sans-serif;
}
h1 {
  margin: 40px 0 20px;
}
h2{
  margin: 10px 0;
}
h3{
  margin: 30px 0;
  font-weight: 500;
}
button{
    margin: 30px 0;
    padding: 10px 20px;
    color: white;
    background-color: #4CAF50;
    border: none;
}

input[type='radio'] {
    appearance: none;
    width: 20px;
    min-width: 20px;
    height: 20px;
    border-radius: 50%;
    outline: none;
    border: none;
    background: white;
    margin: 10px;
}

input[type="radio"]:checked {
  border: 1px solid gray;
}
input[type="radio"]:checked:before {
  background: blue;
}

input[type='radio']:before {
    content: '';
    display: block;
    width: 80%;
    height: 80%;
    margin: 10%;
    border-radius: 50%;
}

.current-timer{
  position: absolute;
  right: 30px;
  bottom: 20px;
}

.error-message{
  color: red;  
}

.display-none{
  display: none;
}

.input-block{
  margin: 1px 0px;
  background-color:whitesmoke;
  display: flex;
}

.input-label{
  padding: 10px 10px;
  width: 100%;
}

.final-question-block{
  background-color: lightgrey;
  border: black solid 1px;
  margin: 20px 0;
  padding: 10px;
}
.final-question-title{
  color: green;
  font-size: 1.2em;
  margin-bottom: 10px;
}
.final-question-answers{
  margin-bottom: 10px;
  margin-left: 20px;
}
.final-question-correct-answer{
  margin-bottom: 10px;
  color: green; 
}
.final-question-your-answer{
  margin-bottom: 10px;
}

.question-passed{
  color: green; 
}

.question-failed{
  color: red; 
}