@keyframes slideSection {
  0% {
    transform: translateX(100%);
    -webkit-transform: translateX(100%);
  }
  100% {
    transform: translateX(0%);
    -webkit-transform: translateX(0%);
  }
}
@-webkit-keyframes slideSection {
  0% {
    transform: translateX(100%);
    -webkit-transform: translateX(100%);
  }
  100% {
    transform: translateX(0%);
    -webkit-transform: translateX(0%);
  }
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
::after,
::before {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-size: 1.5rem;
  color: aliceblue;
  background: rgb(2, 0, 36);
  background: linear-gradient(
    90deg,
    rgba(2, 0, 36, 1) 0%,
    rgba(9, 75, 121, 1) 35%,
    rgba(0, 212, 255, 1) 100%
  );
}
.section {
  background: rgb(2, 0, 36);
  background: linear-gradient(
    90deg,
    rgba(2, 0, 36, 1) 0%,
    rgba(9, 75, 121, 1) 35%,
    rgba(0, 212, 255, 1) 100%
  );
  color: white;
  min-height: 100vh;
  display: block;
  position: fixed;
  left: 20%;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow-x: hidden;
  overflow-y: auto;
  opacity: 1;
  transition: all 0.3s ease;
}
.section.back-section {
  z-index: 1;
}
.section.active {
  z-index: 2;
  opacity: 1;
  animation: slideSection 1s ease;
  -webkit-animation: slideSection 1s ease;
}
.section.container {
  padding-top: 60px;
  padding-bottom: 70px;
}
.container {
  display: block;
  width: 100%;
  height: 100%;
  margin: auto auto auto -7.5%;
}

/* Left-side starts */
.left-side {
  width: 20%;
  height: max-content;
}
.left-side .nav {
  margin: 0;
  list-style: none;
  padding: 0px;
}
.left-side .nav li {
  display: block;
  border-right: 2px solid white;
  border-bottom: 2px solid white;
}
.left-side .nav li a {
  cursor: pointer;
  font-size: 1.4rem;
  font-weight: bolder;
  color: white;
  text-decoration: none;
  line-height: 25vh;
  display: block;
  margin-left: 35px;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  text-transform: capitalize;
}
.left-side .nav li a:not(.active):hover {
  padding-left: 5px;
}
.left-side .nav li a:nth-child(4) {
  border-bottom: none;
}
.left-side .nav li:hover {
  background: #1c92d2;
  background: -webkit-linear-gradient(to right, #f2fcfe, #1c92d2);
  background: linear-gradient(to right, #f2fcfe, #1c92d2);
}
.left-side .nav li a:hover {
  color: black;
}
/* Left-side ends */
/* Right side starts */

.right-side {
  width: 80%;
  height: 100%;
  position: absolute;
  margin: auto auto auto 20%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.istriangle,
.hypotenuse,
.area,
.quiz {
  min-height: 100vh;
  min-width: 100vw;
  display: flex;
}
.istriangle .heading,
.hypotenuse .heading,
.area .heading,
.quiz .heading {
  text-align: center;
  font-size: 3rem;
}
.right-side .container .heading {
  position: relative;
  top: 10%;
}
.istriangle .middle-section,
.hypotenuse .middle-section,
.area .middle-section,
.quiz .middle-section {
  height: 100%;
  display: flex;
  margin: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.right-side .istriangle label,
.right-side .hypotenuse label,
.right-side .area label {
  font-size: 1.5rem;
  padding: 1rem;
}
.right-side .istriangle input,
.right-side .hypotenuse input,
.right-side .area input {
  padding: 0.4rem;
  border: none;
  color: black;
  border-radius: 10px;
  width: 25%;
}
.right-side .istriangle input:hover,
.right-side .hypotenuse input:hover,
.right-side .area input:hover {
  transform: scale(1.05);
  transition: all 0.5s ease;
}

.quiz-form {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: auto;
}
.question-container {
  display: block;
  align-items: center;
  justify-content: center;
  width: 80%;
  /* border: 1px solid black; */
  border-radius: 5px;
}
.question-container p {
  font-size: 1.5rem;
  padding: 1rem;
}
.question-container label {
  font-size: 1.3rem;
  padding: 1rem;
}
.radio-value {
  margin-left: 0.5rem;
}
/* .right-side .question-container:nth-child(1) {
    padding: 10px;
    margin-top: -10%;
}
.right-side .question-container:nth-child(2) {
    padding: 10px;
    margin-top: 5%;
} */
.right-side .section .middle-section button {
  display: block;
  margin-top: 3rem;
  background: transparent;
  color: white;
  border-color: white;
  border-width: medium;
  padding: 0.5rem;
  border-radius: 0.3rem;
  cursor: pointer;
}
.right-side .section .middle-section button:hover {
  transform: scale(1.05);
  transition: all 0.5s ease;
}
.right-side .output {
  position: relative;
  top: -20%;
}
#output-message1,
#output-message2,
#output-message3,
#output-message4 {
  text-align: center;
  font-size: 2rem;
  color: white;
}