form {
  margin: 10px auto;
}
h2 em {
	text-decoration: underline;
}
.answers {
	padding: 10px;
}
.answer {
	display: block;
	margin: 10px auto;
	max-width: 90%;
}
.question {
	width: 90%;
	margin: 20px auto;
	border: 1px solid #ccc;
	border-radius: 3px;
	background-color: rgba(245,245,245, 1);
}
.question h2 {
	background-color: #2bad55;
	color: white;
	font-weight: normal;
	padding: 15px 10px 15px 10px;
  border-radius: 3px 3px 0 0 ;
}
.hint-correct, .hint-uncorrect, .hint-total {
  margin: 10px 10px;
  padding: 15px 15px;
  border-radius: 3px; 
  color: white;
}
.hint-correct {
  background-color: #659CD4;
}
.hint-uncorrect {
  background-color: #FF3538;
}
.hint-total {
  background-color: #26A146;
}
.head {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  padding: 50px 0;
}
/*стилизация радио кнопок*/
.radio {
  vertical-align: top;
  width: 10px;
  height: 10px;
  margin: 3px 3px 3px 0;
}
.radio + label {
  cursor: pointer;
}
.radio:not(checked) {
  position: absolute;
  opacity: 0;
}
.radio:not(checked) + label {
  display: block;
  position: relative;
}
.radio:not(checked) + label:before {
  content: '';
  position: absolute;
  top: 0px;
  left: -25px;
  width: 17px;
  height: 17px;
  border: 1px solid #CDD1DA;
  border-radius: 50%;
  background: #FFF;
}
.radio:not(checked) + label:after {
  content: '';
  position: absolute;
  top: 4px;
  left: -21px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #2bad55;
  box-shadow: inset 0 1px 1px rgba(0,0,0,.5);
  opacity: 0;
  transition: all .2s;
}
.radio:checked + label:after {
  opacity: 1;
}
.buttons {
	display: table;
	margin: 0 auto;
}
.btn {
  width: 180px;
  height: 45px;
}
.btn-search {
  display: inline-block;
  cursor: pointer;
  border: none;
  margin: 10px 10px; 
  border-radius: 2px;
  font-size: 20px;
  color: #fff ;
  background-color: #2bad55;
  outline: none;
}
.btn-search:hover {
  background-color: #00a5d6;
}
.btn-search:active {
  border: 2px solid #2bad55;
  background-color: white;
  color: #2bad55;
}
@media (min-width: 481px) and (max-width:960px) {
  nav ul {
    justify-content: center;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .radio:not(checked) + label {
  	position: relative;
  	margin-left: 20px;
  }
  .answer {
	  margin: 10px 0;
	  max-width: 90%;
	  padding-left: 5px;
  }
}
@media (max-width:480px) {
  .question {
	  width: 100%;
  }	
 .radio:not(checked) + label {
    margin-left: 20px;
  }
  .answer {
	 margin: 10px 0;
	 max-width: 100%;
	 padding-left: 5px;
  }
  nav ul a {
	 padding: 5px 0;
  }
  nav ul {
	 flex-direction: column;
   flex-wrap: wrap;
   align-items: center;
  }
  .btn-search {
	 display: block;
	 margin: 10px auto;
  }
}