styles.css

html {
    height: 100%;
}

body {
    margin: 0;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    position: relative;
    height: 100%;
}

#game-board {
    border: 0;
    background-color: #232323;
    width: 100%;
    height: 100%;
    position: absolute;
    overflow: hidden;
}

#game-board > div {
    position: absolute;
}

.cargo {
    --size: 70px;
    width: var(--size);
    height: var(--size);    
    border: 1px solid black;
    background-color: cornflowerblue;
}

.cargo.hit {
    border: 3px solid crimson;
}

.zerg {
    --size: 40px;
    width: var(--size);
    height: var(--size);       
    border-radius: var(--size);
    border: 4px solid crimson;
    cursor: crosshair;
    z-index: 1;
}

.zerg.hit {
    border: 5px solid red;
    background-color: crimson;
}


/* ----------- SCOREBOARD ------------ */

.scoreboard {
    position: absolute;
    display: flex;
    flex-direction: column;
    background-color: darkslategray;
    z-index: 2;
    left: 45%;
    text-align: center;
    font-size: 1.5em;
}

.scoreboard > div {
    display: inline-flex;
    margin: 5px;
}
.scoreboard > div:first-child {
    border: 1px solid black;
}

.scoreboard .team {
    margin: 10px;
}

.scoreboard .action {
    display: flex;
    flex-grow: 1;
    justify-content: space-evenly;
    margin: 0 2px;    
}

#winner-message {
    position: absolute;
    display: flex;
    justify-content: center;
    width: 100%;
    height: 100%;
    align-items: center;
}

.winner-message {
    z-index: 3;
    font-size: 1em;
    color: red;
    transition: all 1s ease-in-out;
    text-shadow: 3px 3px 7px red;
}

.winner-message.animation {
    font-size: 5em;
    color: gold;
}