Seolmoon.css

body {
    display: flex;
    justify-content: center;
    /*background-color: rgb(235, 235, 235);*/
    margin: 0;
    padding: 0;
    width:100%;
    height: 100vh;
}

.main_box {
    display: flex;
    flex-direction: column;
    width: 80%;
    background-color: white;
    /*padding: 0px 45px;*/
}

.top_box {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 70px;
}

.question_box {
    text-align:center;
    margin-bottom: 30px;
    font-size: 25px;
}

.answer_box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.answer {
    width: 85%;
    height:80%;
    padding: 16px 0px;
    margin-bottom: 9px;
    font-size: 18px;
    white-space:normal;
     -webkit-appearance: none;
      -webkit-border-radius: 0;
}

.button_box {
    display: flex;
    justify-content: space-between;
    width: 100%;
 -webkit-appearance: none;
}

.button_box1 {
    display: flex;
    justify-content: flex-end;
    width: 100%;
     -webkit-appearance: none;
}

.next_button{
    margin-top: 115px;
    padding: 10px 20px;
    font-size: 18px;
    -webkit-appearance: none;
}

.prev_button{
    margin-top: 115px;
    padding: 10px 20px;
    font-size:18px;
     -webkit-appearance: none;
}

.clicked {
background-color:darkgray;
color:black;
}