정답입니다!
틀렸습니니다!
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JAVASCRIPT
HTML
CSS 
//선택자
const quizType = document.querySelector(".quiz__type");                 // 퀴즈 종류
const quizNumber = document.querySelector(".quiz__question .number");   // 퀴즈 번호
const quizAsk = document.querySelector(".quiz__question .ask");         // 퀴즈 질문
const quizConfirm = document.querySelector(".quiz__answer .confirm");   // 정답 확인 버튼
const quizResult = document.querySelector(".quiz__answer .result");     // 정답 결과
const quizView = document.querySelector(".quiz__view"); // 강아지
const quiz__selects = document.querySelector("quiz__selects");             //객관식 보기
const quizChoice = document.querySelectorAll(".choice");            //객관식 선택
const quizSelect = document.querySelectorAll(".select");

//문제 정보
const quizInfo = [{
    ansewerType: "웹디자인기능사 2022년 01회",
    ansewerNum: "1",
    ansewerAsk: "색의 3속성 중 사람의 눈이 가장 예민하고 강하게 반응하는 대비는?",
    ansewerChoice: ["명도대비", "색상대비", "보색대비", "채도대비"],
    ansewerResult: "1",
    ansewerEx: "해설 없음"
}]

function updateQuiz() { // 문제 출력과 보기 출력을 한번에 묶어서 실행 시켜주기위한 함수 실행문
    //문제 출력
    quizType.textContent = quizInfo[0].ansewerType;
    quizNumber.textContent = quizInfo[0].ansewerNum;
    quizAsk.textContent = quizInfo[0].ansewerAsk;
    quizResult.textContent = quizInfo[0].ansewerEx;

    //보기 출력
    // for (i=0; i<4; i++){
    //     quizChoice[i].textContent = quizInfo[0].ansewerChoice[i];
    // }

    quizInfo.forEach(function (el, i) {
        quizChoice[0].textContent = quizInfo[i].ansewerChoice[0];
        quizChoice[1].textContent = quizInfo[i].ansewerChoice[1];
        quizChoice[2].textContent = quizInfo[i].ansewerChoice[2];
        quizChoice[3].textContent = quizInfo[i].ansewerChoice[3];
    });

    //해설 숨기기
    quizResult.style.display = "none";
}
updateQuiz();

//정답 확인
function ansewerQuiz() {
    //사용자가 선택한 정답과 문제 정답이 일치한지 일치하지 않은지
    //사용자가 클릭한 Input 박스를 가져와야한다. --> 사용자가 클릭하면 checked 속성이 생긴다.

    for (let i = 0; i < quizSelect.length; i++) {
        if (quizSelect[i].checked == true) { //문제 보기에 체크가 되어있는 상태
            //체크되어있는 번호와 문제 번호가 일치한지 확인 (if)
            if (quizSelect[i].value == quizInfo[0].ansewerResult) {
                // alert("정답")
                quizView.classList.add("like");
            } else {
                // alert("오답")
                quizView.classList.add("dislike");
                quizResult.style.display = "block";
                quizConfirm.style.display = "none";
            }
        }
    }
}

//정답 클릭
quizConfirm.addEventListener("click", ansewerQuiz);

<main id="main">
    <div class="quiz__wrap">
        <div class="quiz">
            <span class="quiz__type"></span>
            <h2 class="quiz__question">
                <span class="number"></span>
                <div class="ask">
                </div>
            </h2>
            <div class="quiz__view">
                <div class="true">정답입니다!</div>
                <div class="false">틀렸습니니다!</div>
                <div class="dog">
                    <div class="head">
                        <div class="ears"></div>
                        <div class="face"></div>
                        <div class="eyes">
                            <div class="teardrop"></div>
                        </div>
                        <div class="nose"></div>
                        <div class="mouth">
                            <div class="tongue"></div>
                        </div>
                        <div class="chin"></div>
                    </div>
                    <div class="body">
                        <div class="tail"></div>
                        <div class="legs"></div>
                    </div>
                </div>
            </div>
            <div class="quiz__answer">
                <div class="quiz__selects">
                    <label for="select1">
                        <input type="radio" id="select1" class="select" name="select" value="1">
                        <span class="choice"></span>
                    </label>
                    <label for="select2">
                        <input type="radio" id="select2" class="select" name="select" value="2">
                        <span class="choice"></span>
                    </label>
                    <label for="select3">
                        <input type="radio" id="select3" class="select" name="select" value="3">
                        <span class="choice"></span>
                    </label>
                    <label for="select4">
                        <input type="radio" id="select4" class="select" name="select" value="4">
                        <span class="choice"></span>
                    </label>

                </div>
                <button class="confirm">정답 확인하기</button>
                <div class="result"></div>
            </div>
        </div>
    </div>
</main>

body {
background-color: #f6f6f6;
background-image:
    linear-gradient(90deg, #cdcccc 0px, #cdcccc 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(#cdcccc 0px, #cdcccc 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(#e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(90deg, #e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(transparent 0px, transparent 5px, #f6f6f6 5px, #f6f6f6 95px, transparent 95px, transparent 100px),
    linear-gradient(90deg, #e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, #e0e0e0 99px, #e0e0e0 100px),
    linear-gradient(90deg, transparent 0px, transparent 5px, #f6f6f6 5px, #f6f6f6 95px, transparent 95px, transparent 100px),
    linear-gradient(transparent 0px, transparent 1px, #f6f6f6 1px, #f6f6f6 99px, transparent 99px, transparent 100px),
    linear-gradient(#cdcccc, #cdcccc);
background-size: 100px 100%, 100% 100px, 100% 10px, 10px 100%, 100% 100px, 100px 100%, 100px 100%, 100px 100px, 100px 100px;
}

#header {
background: #262626;
color: #fff;
display: flex;
justify-content: space-between;
/* 콘텐츠 양쪽 정렬 */
align-items: center;
padding: 10px;
position: relative;
z-index: 10;
}

#header::before {
content: '';
border: 4px ridge #a3a3a3;
position: absolute;
/* 기준점 */
left: 5px;
top: 5px;
width: calc(100% - 10px);
height: calc(100% - 10px);
box-sizing: border-box;
z-index: -1;
}

#header h1 {
font-family: "DungGeunMo";
padding: 3px 3px 5px 10px;
font-size: 30px;
color: rgb(255, 149, 0);
}

#header h1 em {
font-size: 16px;
font-style: normal;
color: #fff;
}
#header h1 a {
color: rgb(255, 149, 0);
}

@media (max-width:600px) {
#header h1 em {
    display: none;
}
}

#header nav {
padding-right: 10px;
}

#header nav li {
display: inline;
}

#header nav li a {
font-family: "DungGeunMo";
color: #fff;
padding: 0 10px;
border: 1px dashed #fff;
}

#header nav li.active a {
color: rgb(117, 57, 0);
background: rgb(255, 149, 0);
}

#footer {
background: #fff;
text-align: center;
padding: 20px;
width: 100%;
box-sizing: border-box;
position: fixed;
left: 0;
bottom: 0;
z-index: 10000;
}

#footer a {
color: #000;
font-family: "DungGeunMo";
}

#footer a:hover {
text-decoration: underline;
}

.quiz__wrap {
display: flex;
align-items: center;
justify-content: center;
margin-top: 50px;
margin-bottom: 150px;
}

.quiz {
max-width: 500px;
width: 100%;
background-color: #fff;
border: 8px ridge #cacaca;
margin: 10px;
margin-bottom: 150px;
}

.quiz__type {
background-color: #cacaca;
text-align: center;
display: block;
font-size: 16px;
border: 3px ridge #cacaca;
color: #3b3b3b;
font-family: "DungGeunMo";
padding: 4px;
}

.quiz__question {
font-family: 'PyeongChang';
border-top: 6px ridge #cacaca;
border-bottom: 6px ridge #cacaca;
padding: 20px;
line-height: 1.3;
}

.quiz__question .number {
color: rgb(255, 149, 0);
}

.quiz__question .ask {
display: inline;
}

.quiz__answer {
border-top: 6px ridge #cacaca;
padding: 10px;
background-color: #f5f5f5;
}

.quiz__answer .confirm {
font-family: 'PyeongChang';
border: 6px ridge #cacaca;
width: 100%;
font-size: 22px;
padding: 13px 20px;
background-color: #b6b6b6;
cursor: pointer;
}

.quiz__answer .result {
font-family: 'PyeongChang';
border: 6px ridge #cacaca;
width: 100%;
font-size: 22px;
padding: 13px 20px;
box-sizing: border-box;
text-align: center;
display: none;
}

.quiz__view {
background-color: #f5f5f5;
}


/* dog */
.dog .tail,
.dog .chin,
.dog .tongue::before,
.dog .tongue::after,
.dog .mouth,
.dog .nose,
.dog .teardrop,
.dog .eyes,
.dog .face::before,
.dog .face::after,
.dog .ears::before,
.dog .ears::after {
transition: 0.2s ease-in;
}

*:before,
*:after {
box-sizing: border-box;
}

.dog {
padding-top: 50px;
}

.dog .head,
.dog .body {
position: relative;
width: 115px;
}

.dog .head {
height: 115px;
border-radius: 50% 50% 0 0;
margin: 0 auto;
}

.dog .ears {
position: relative;
top: -14%;
width: 100%;
}

.dog .ears::before,
.dog .ears::after {
content: "";
position: absolute;
top: 0;
width: 35px;
height: 70px;
background: #CB7A1D;
border-top: 11px solid #F7AA2B;
border-left: 7px solid #F7AA2B;
border-right: 7px solid #F7AA2B;
}

.dog .ears::before {
left: 0;
border-radius: 50% 45% 0 0;
}

.dog .ears::after {
right: 0;
border-radius: 45% 50% 0 0;
}

.dog .face {
position: absolute;
background: #F7AA2B;
width: 100%;
height: 100%;
border-radius: 50% 50% 0 0;
}

.dog .face::before,
.dog .face::after {
content: "";
display: block;
margin: auto;
background: #FEFEFE;
}

.dog .face::before {
width: 15px;
height: 35px;
margin-top: 24px;
border-radius: 20px 20px 0 0;
}

.dog .face::after {
position: absolute;
bottom: -1px;
left: 0;
right: 0;
width: 60px;
height: 65px;
border-radius: 45% 45% 0 0;
}

.dog .eyes {
position: relative;
top: 29%;
text-align: center;
}

.dog .eyes::before,
.dog .eyes::after {
content: "";
display: inline-block;
width: 12px;
height: 12px;
border-radius: 100%;
background: #451D1C;
margin: 0 14.5%;
}

.dog .teardrop {
position: absolute;
top: 125%;
left: 19%;
width: 6px;
height: 6px;
border-radius: 0 50% 50% 50%;
transform: rotate(45deg);
background: #FEFEFE;
visibility: hidden;
}

.dog .nose {
position: relative;
top: 35%;
width: 16px;
height: 8px;
border-radius: 35px 35px 65px 65px;
background: #451D1C;
margin: auto;
}

.dog .mouth {
z-index: 1;
position: relative;
top: 34.5%;
width: 4px;
height: 6px;
margin: 0 auto;
text-align: center;
background: #451D1C;
}

.dog .mouth::before,
.dog .mouth::after {
content: "";
position: absolute;
top: -4px;
width: 18px;
height: 18px;
border-radius: 50%;
border: 4px solid #451D1C;
border-left-color: transparent;
border-top-color: transparent;
z-index: 2;
}

.dog .mouth::before {
transform: translateX(-89%) rotate(45deg);
}

.dog .mouth::after {
transform: translateX(-2px) rotate(45deg);
}

.dog .tongue {
position: relative;
z-index: 1;
}

.dog .tongue::before,
.dog .tongue::after {
content: "";
position: absolute;
}

.dog .tongue::before {
top: 10px;
left: -7px;
width: 18px;
height: 0;
border-radius: 50%;
background: #451D1C;
z-index: -1;
}

.dog .tongue::after {
top: 14px;
left: -4px;
width: 12px;
height: 0;
border-radius: 20px;
background: #F5534F;
z-index: 5;
}

.dog .chin {
position: relative;
top: 47.5%;
margin: 0 auto;
width: 12px;
height: 12px;
border-top: 10px solid #E8E7EC;
border-left: 5px solid transparent;
border-right: 5px solid transparent;
border-radius: 2px;
z-index: 0;
}

.dog .body {
position: relative;
height: 139px;
margin: auto;
z-index: 0;
}

.dog .body::before,
.dog .body::after {
content: "";
position: absolute;
top: -1px;
left: 0;
right: 0;
bottom: 0;
display: block;
width: 100%;
margin: auto;
background: #F7AA2B;
}

.dog .body::after {
top: -2px;
bottom: -1px;
width: 60px;
background: #FEFEFE;
}

.dog .tail {
position: absolute;
left: -60%;
bottom: 1px;
background: #F7AA2B;
width: 93px;
height: 15px;
transform: rotate(45deg);
transform-origin: 100% 50%;
border-radius: 25px 0 0 25px;
z-index: -2;
animation: movetail 0.1s linear infinite alternate forwards;
}

.dog .legs {
position: absolute;
bottom: 0;
left: -10%;
width: 120%;
height: 15%;
background: #F7AA2B;
border-radius: 10px 10px 0 0;
}

.dog .legs::before,
.dog .legs::after {
content: "";
position: absolute;
bottom: 1px;
background: #CB7A1D;
z-index: -1;
}

.dog .legs::before {
left: -7.5%;
width: 115%;
height: 55%;
border-radius: 5px 5px 0 0;
}

.dog .legs::after {
left: -3.5%;
width: 107%;
height: 250%;
border-radius: 20px 20px 35px 35px;
}

.dog.like .face::before {
margin-top: 10px;
}

.dog.like .face::after {
height: 85px;
}

.dog.like .eyes {
top: 13%;
}

.dog.like .eyes::before,
.dog.like .eyes::after {
width: 18px;
height: 5px;
margin: 0px 12.5%;
transform: rotate(-37.5deg);
border-radius: 20px;
}

.dog.like .eyes::after {
transform: rotate(37.5deg);
}

.dog.like .nose {
top: 18%;
}

.dog.like .mouth {
top: 16.5%;
}

.dog.like .tongue::before {
height: 12px;
}

.dog.like .tongue::after {
height: 24px;
animation: movetongue 0.1s linear 0.35s infinite alternate forwards;
}

.dog.like .chin {
top: 34%;
}

.dog.like .tail {
animation: movetail 0.1s linear infinite alternate forwards;
}

.dog.dislike .ears::before {
transform: rotate(-50deg) translate(-7px, 2px);
}

.dog.dislike .ears::after {
transform: rotate(50deg) translate(7px, 2px);
}

.dog.dislike .face::before {
margin-top: 28px;
}

.dog.dislike .face::after {
height: 55px;
}

.dog.dislike .eyes {
top: 38%;
}

.dog.dislike .eyes::before,
.dog.dislike .eyes::after {
width: 18px;
height: 5px;
margin: 0px 14.5%;
transform: rotate(-37.5deg);
border-radius: 20px;
}

.dog.dislike .eyes::after {
transform: rotate(37.5deg);
}

.dog.dislike .teardrop {
animation: cry 0.1s ease-in 0.25s forwards;
}

.dog.dislike .nose {
top: 44%;
}

.dog.dislike .mouth {
top: 42%;
}

.dog.dislike .chin {
top: 52%;
}

.dog.dislike .tail {
transform: rotate(0);
animation: none;
}

@keyframes movetongue {
100% {
    height: 27px;
}
}

@keyframes movetail {
0% {
    transform: rotate(37deg);
}

100% {
    transform: rotate(52deg);
}
}

@keyframes cry {
100% {
    visibility: visible;
}
}