.yo {
    background-color: gray;
}
.table-sm {
   border-radius: 5%;
   text-align: center;
   min-width: 300px;
}
   #myInput, #answer {
    padding: 1rem;   
    border: none;
    background-color: gainsboro;
    font-size: larger;
}

.btn {
    width: 70px;
}

.btn-success, .forge {
    width: 290px;
}