body{
    font-size: 2rem;
    padding: 2rem 5rem 5rem 5rem;
}
.tips{
    color: red;
}
.step{
    display: none;
    margin-top: 2rem;
}
.btn{
    width: 100%;
    height: 100px;
    border: 0;
    border-radius: 20px;
    color: #fff;
    font-size: 2rem;
    background-color: cadetblue;
}
ul{
    padding: 0;
    margin: 0;
    list-style-type: none;
}
ul li {
    font-weight: 600;
    margin-top: 2rem;
}
.ans{
    display: block;
    color: red;
    margin-top: 1.5rem;
}
.mt-2{
  margin-top: 2rem
}