body {
}

.btn {
    display: inline-block;
    padding: 5px;
    background-color: lightblue;
    border-style: solid;
    border-width: 2px;
    border-color: darkgrey;
    border-radius: 5px;
    text-decoration: none;
    cursor:pointer;
}

.btn-off {
    display: inline-block;
    padding: 5px;
    background-color: lightblue;
    border-style: solid;
    border-width: 2px;
    border-color: darkgrey;
    border-radius: 5px;
    text-decoration: none;
    cursor: default;
    opacity: 0.6;
}