.modal {
    display: none; 
    position: fixed; 
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0); 
    background-color: rgba(0,0,0,0.4); 
}
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; 
    padding: 20px;
    border: 1px solid #888;
    width: 80%; 
}
.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}
.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.option-button {
    display: inline-block;
    padding: 10px 20px;
    margin: 5px;
    border: 2px solid #ccc;
    border-radius: 25px;
    cursor: pointer;
    transition: background-color 0.3s, border-color 0.3s;
}
.option-button.selected {
    background-color: #007bff;
    border-color: #007bff;
    color: white;
}
.option-button .ball {
    display: inline-block;
    width: 10px;
    height: 10px;
    background-color: white;
    border-radius: 50%;
    margin-left: 10px;
}