body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    background: white;
    border: 1px solid black;
    padding: 2rem;
}

#time24Display, #time12Display {
    margin: 0.5rem 0;
    padding: 0.5rem;
    display: inline-block;
    cursor: text;
    border: 1px solid black
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 1px;
    border-radius: none;  
    background: black;
    outline: none;
    margin: 2rem 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%; 
    background: black;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: black;
    cursor: pointer;
}