*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body,html {
    padding: 0;
    margin: 0;
    overflow: hidden;

    font-family: "Courier New", monospace;
}

.stopwatch_time {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 5vmin;

    margin-top: 5vmin;
    height: 50%;

    font-size: 5vmin;
    font-variant-numeric: tabular-nums;
}

.stopwatch_buttons {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;

    flex: 1;

    padding-bottom: 3vmin;
}

.stopwatch_start_stop_button {
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    overflow: hidden;

    height: 8vmin;
    aspect-ratio: 1 / 1;

    border-radius: 50%;

    background: rgba(0, 0, 0, 0.3);
    border: 0.0625rem solid rgba(255, 255, 255, 0.7);
    color: rgba(255, 255, 255, 0.95);


    transition: ease 0.1s;
}

.start_stop_icon {
    font-size: 4vmin;
    line-height: 1;
}

.stopwatch_start_stop_button:hover {
    scale: 1.1;
}

.stopwatch_buttons_left_side {
    flex: 1;
    display: flex;

    padding-right: 2.5vmin;
}

.stopwatch_reset_button {
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    overflow: hidden;

    height: 5vmin;
    aspect-ratio: 1 / 1;

    border-radius: 50%;

    background: rgba(0, 0, 0, 0.3);
    border: 0.0625rem solid rgba(255, 255, 255, 0.7);
    color: rgba(255, 255, 255, 0.95);

    transition: ease 0.1s;
}

.reset_icon {
    font-size: 2.5vmin;
    line-height: 1;
}

.stopwatch_reset_button:hover {
    scale: 1.1;
}

.select_button {
    animation: selectButton 0.15s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes selectButton {
    0% {
        transform: scale(1.1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1.1);
    }
}

.stopwatch_buttons_right_side {
    flex: 1;
    display: flex;
    flex-direction: row;
    justify-content: flex-start;

    padding-left: 2.5vmin;
}