base.css

:root {
    --green: forestgreen;
    --greenText: ghostwhite;
    --red: #7a0017;
    --yellow: #ffc600;
}

/*body*/
body {
    background-color: var(--green, green);
    color: var(--greenText, white);
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body>header,
body>footer {
    margin: 0;
    padding: .25rem;
    text-align: center;
    font-family: 'Fascinate', cursive;
    background: rgba(0, 0, 0, .25);
}

body>header {
    font-size: 1.25em;
    flex-shrink: 0;
    box-shadow: 0 .125em .125em rgba(0, 0, 0, .5);
    padding-bottom: 0;
    position: relative;
}

h1 {
    margin: .125em;
    display: inline-block;
}

h1::before,
h1::after {
    margin: 0 .25em;
    content: '🍌';
}

/*progress*/

progress {
    width: 100%;
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;
    border: none;
    height: .25rem;
    animation: all 1s;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

progress::-webkit-progress-bar {
    background: transparent;
}

progress::-webkit-progress-value {
    background: var(--yellow, yellow);
}

progress::-moz-progress-bar {
    background: var(--yellow, yellow);
}

/*main*/
main {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    overflow: auto;
}

main section {
    min-width: 75vw;
    margin: .5em;
    padding: .25rem;
    border: thin solid hsla(0, 100%, 100%, .5);
}

main section:empty {
    display: none;
    border-color: transparent;
}

/*error*/

main .error {
    background: var(--red, red);
    font-size: 2em;
    padding: .5em;
    border-radius: .25em;
    border: .25em solid rgba(0, 0, 0, .5);
}

main .error::before {
    content: '💣';
    margin-right: .5em;
}

/*button*/

button {
    font-size: 1.2rem;
    border: .125em solid rgba(0, 0, 0, .25);
    border-radius: .125rem;
    color: var(--green, green);
    text-shadow: .0625em .0625em .25em rgba(0, 0, 0, .25);
    animation: all .4s;
    min-height: 1.8rem;
    margin: .25em;
    background: hsla(0, 100%, 100%, .85);
}

button:hover {
    background: var(--yellow, yellow);
    box-shadow: 1px 1px .0625rem black;
    transform: translateY(-1px);
    outline: thin solid transparent;
}

/*login*/

form[name=login] {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 1.2em;
    margin: 1em;
}

form label,
form button {
    width: 50%;
}

form label {
    display: flex;
    align-items: center;
}

form label input {
    flex-grow: 1;
    margin: .5em;
    background: hsla(0, 100%, 100%, .5);
    border: .125em solid rgba(0, 0, 0, .25);
    border-radius: .125em;
    padding: .125em;
    font-size: 1em;
    color: var(--green, green);
    transition: all .4s;
    outline: thin currentColor;
}

form label input:focus {
    background: hsla(0, 100%, 100%, .75);
}

/*me*/
.logged {
    position: absolute;
    top: 0;
    right: 0;
}

/*rooms*/
.rooms {
    padding: 1rem .5rem;
    list-style: none;
    display: grid;
    margin: 0 auto;
    grid-template-columns: repeat(auto-fill, minmax(16em, 1fr));
    grid-auto-rows: minmax(3em, auto);
    grid-gap: .25em .5em;
}

.rooms li,
.rooms .room {
    height: 100%;
    box-sizing: border-box;
}

.rooms .room {
    padding: .5rem;
    border: thin solid rgba(0, 0, 0, .25);
    min-width: 16ch;
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, .25);
}

.rooms .room .name {
    font-family: 'Fascinate', sans-serif;
}

.rooms .room .status {
    flex-grow: 1;
    text-align: center;
}

/*current*/

.room-current header {
    display: flex;
    justify-content: space-between;
    font-size: 1.2em;
    border-bottom: .125em solid rgba(0, 0, 0, .25);
    text-shadow: 1px 1px 2px black;
    background: rgba(0, 0, 0, .25);
    box-shadow: 0 0 0 .25em rgba(0, 0, 0, .25);
    align-items: center;
}

.room-current header .name {
    font-family: 'Fascinate', cursive;
    font-size: 1.5em;
}

/*room winner*/
.room-current .winner {
    color: var(--yellow, yellow);
}

.room-current .winner::before,
.room-current .winner::after {
    content: '🎊';
    margin: 0 .5em;
}

.room-current .winner::before {
    content: 'Winner: ';
}

/*room players*/
.room-current .players {
    display: grid;
    margin: .5em 0;
    grid-template-columns: repeat(auto-fill, minmax(24em, 1fr));
    grid-gap: 1em;
}

.room-current .player {
    padding: .25rem;
    border: thin solid currentColor;
    display: inline-block;
}

.room-current .player.bank {
    background: hsla(0, 100%, 100%, .25);
    border-color: hsla(0, 100%, 100%, .25);
}

.room-current .player.me {
    background: rgba(0, 0, 0, .25);
    border-color: rgba(0, 0, 0, .25);
}

.room-current .player.me {
    grid-column: 1;
}

.room-current .player .move {
    text-align: right;
}

.room-current .player.timeout {
    opacity: .25;
}

.room-current .player.timeout .move::before {
    content: '💤';
}

.room-current .player.draw .move::before {
    content: '▶️';
}

.room-current .player.stay .move::before {
    content: '⏹';
}

.room-current .player.burst .move::before {
    content: '💣';
}

.room-current .player.burst {
    color: var(--red, red);
}

.room-current .player.wait .move::before {
    content: '😴';
}

.room-current .player.in-game .move::before {
    content: '⏰';
}

.room-current .player {
    border: thin solid transparent;
    overflow: hidden;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 2em 1fr 2.5em;
    grid-auto-flow: dense;
}

.room-current .player .cards {
    grid-column: 1 / 4;
    display: flex;
    align-items: center;
}

.room-current .player .cards .card {
    flex: 1 2 3em;
    max-width: 3em;
}

.room-current .player .cards:first-child {
    box-shadow: 0 0 0 1px red;
}

.room-current .player .cards:nth-child(1+n) {
    margin-left: -6em;
}

.room-current .player .cards .card img {
    max-height: 12em;
}

.room-current .player .actions {
    grid-column: 1 / 4;
    display: flex;
    justify-content: space-around;
    border-top: .125em solid rgba(0, 0, 0, .25);
}