/* BOTÃO BUZZER */
.button-buzzer{
    margin-top:7px;
    opacity:.6;
    width:80px;
    height:80px;
    border-radius:50%;
    border:none;
    background:var(--lightgray);
    color:var(--tx1);
    font-weight:bold;
    font-size:18px;
    cursor:default;}
.button-buzzer.active{opacity:1;background:var(--lightred)}