body{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.box{
    background: white;
    max-width: 800px;
    border-radius: 20px;
    padding: 50px;
    position: relative;
    border: 2px solid gray;
    

}
.content{
    border-bottom: 2px solid gray;
   
}
.box .question{
    font-size: 24px;
    font-weight: bold;
    padding: 10px 0px;
}
.box .question::after{
    content: "+";
    position: absolute;
    right: 30px;
    font-weight: bold;
    font-size: 24px;
    cursor: pointer;
}
.box .question.active::after{
    content: '-';
}

.box .answer{
    font-size: 20px;
    height: 0px;
    overflow: hidden;
    transition: all .5s;
}
.box .answer.active{
    height: 20px;
    padding-bottom: 10px;
    transition: all .5s;
}