body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(var(--num-cols), 40px);
    grid-template-rows: repeat(var(--num-rows), 40px);
}

.block {
    width: 40px;
    height: 40px;
    background: #000000;
    transition: background 0.3s;
}

#circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    background: black;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: transform 0.3s ease;
}

#circle:hover {
    transform: translate(-50%, -50%) scale(1.2);
}


#dropdown {
    position: absolute;
    top: calc(50% + 50px);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 35px;
    
  
    padding: 10px;
    border-radius: 5px;
}

#dropdown a {
    display: block;
    margin: 10px 0;
    color: #000000;
    text-decoration: none;
}

#dropdown a:hover {
    color: rgb(51, 255, 0);
}


.hidden {
    display: none;
}