body {
    background-color: black;
    color: white;
    font-family: 'Press Start 2P', cursive;
    margin: 0px;
    padding: 0px;
}

header > h3 {
    --padding-size: 1em;
    padding-top: var(--padding-size);
    padding-bottom: var(--padding-size);
    text-align: center;
    margin: 0px;
}

img {
    position: absolute;
}

#checkers_game_holder {
    margin: auto;
    width: fit-content;
}

.square_one, .square_two {
    --size: 40px;
    height: var(--size);
    width: var(--size);
    display: inline-block;
    font-size: none;
    margin: 2px;
    border: 1px solid #6c3f3f;
}

.square_one {
    background-color: black;
}

.square_two {
    background-color: rgb(128, 26, 0);
}

.square {

    transform: scale(1); 
    animation-name: pulse;  
    animation-duration: 1s;   
    animation-timing-function: ease-in-out;  
    transition: transform 0.3s ease; 
}

.square:hover img {
    animation-name: pulse; 
    animation-duration: 1s; 
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out; 
}

#current_player {
    text-align: center;
    color: gold;
}

.checker_holder {
    display: flex;
    justify-content: center;
    align-content: center;
}

.clicked {
    opacity: 0.5;
}

::selection {
    user-select: none;
}

@keyframes pulse {
    0% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.2);
    }
    100% {
      transform: scale(1);
    }
 }