body{
    margin: 0;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    padding: 10px;
    user-select: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

#btn{
    -webkit-appearance: none;
}
#btn:checked ~ .modal-content{
    display: flex;

}

.modal-content{
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(69, 132, 250, 0.8);
    padding: 20px;
    border-radius: 5px;
    justify-content: center;
    align-items: center;
    box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.3);
    flex-direction: column;
}
label{
    margin-bottom: 10px;
    display: block;
    cursor: pointer;
    padding: 20px;
    background: #ffffff;
    width: 300px;
    color: rgb(0, 0, 0);
    text-align: center;
    border-radius: 10px;
    box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}