body { 
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(128, 128, 128, 0.342);
    height: 80vh;
}

.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    background-color: white;
    padding: 1.5rem;
    border: 2px solid grey;
    border-radius: 20px;
}

.display {
    font-size: 4rem;
    font-weight: bold;
    font-family: monospace;
    color: rgba(0, 0, 0, 0.75);
    text-shadow: 2px 2px 3px grey;
    margin-bottom: 1rem;
}

.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}


.controls button {
    min-width: 105px;
    padding: 8px 8px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    color: white;
    cursor: pointer;
    transition: background-color ease-in-out 0.3s;
}

.startBtn {
    background-color: hsl(120, 100%, 40%);
}
.startBtn:hover {
    background-color: hsl(120, 100%, 35%);
}

.stopBtn {
    background-color: hsl(0, 100%, 50%);
}

.stopBtn:hover {
    background-color: hsl(0, 100%, 45%);
}

.resetBtn {
    background-color: hsl(184, 100%, 40%);
}

.resetBtn:hover {
    background-color: hsl(184, 100%, 35%);
}