body {
    font-family: Arial, sans-serif;
    text-align: center;
}

.container {
    width: 50%;
    margin: 40px auto;
    padding: 20px;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.length-container {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.break-container, .session-container {
    display: flex;
    align-items: center;
}

#break-label, #session-label {
    margin-right: 10px;
}

#break-length, #session-length {
    font-size: 24px;
    font-weight: bold;
    margin: 0 10px;
}

#break-decrement, #break-increment, #session-decrement, #session-increment {
    width: 30px;
    height: 30px;
    font-size: 18px;
    border: none;
    border-radius: 50%;
    background-color: #4CAF50;
    color: #fff;
    cursor: pointer;
}

#break-decrement:hover, #break-increment:hover, #session-decrement:hover, #session-increment:hover {
    background-color: #3e8e41;
}

.timer-container {
    margin-bottom: 20px;
}

#timer-label {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

#time-left {
    font-size: 48px;
    font-weight: bold;
}

.button-container {
    display: flex;
    justify-content: space-between;
}

#start_stop, #reset {
    width: 100px;
    height: 30px;
    font-size: 18px;
    border: none;
    border-radius: 5px;
    background-color: #4CAF50;
    color: #fff;
    cursor: pointer;
}

#start_stop:hover, #reset:hover {
    background-color: #3e8e41;
}