.w {
    width: 200px; 
}
   
.list-style {
    list-style-position: inside;
}

.center {
    text-align: center;
}

.left {
    text-align: left;
}

.answer {
    border-top: solid darkgray;
    margin: 10px;
    padding: 10px 80% 10px 30px;
    color: darkgray;
    font-style: italic;    
}

.none {
    display: none;
}