style.css

@import url('https://fonts.googleapis.com/css2?family=Permanent+Marker&display=swap');

* {
    box-sizing: border-box;
}

body {
    background-color: black;
    color: #fff;
    font-family: 'Permanent Marker', cursive;
}

main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.game-area {
    display: grid;
    width: 450px;
    height: 450px;
    grid-template-columns: auto auto auto;
}

.block {
    display: flex;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
    border: 3px solid #fff;
    transition: all 200ms cubic-bezier(0.175, 0.885, 0.320, 1.275);
}

.block:hover {
    transform: scale(1.1);
    cursor: pointer;
}

#block-0, #block-1, #block-2 {
    border-top: none;
}

#block-0, #block-3, #block-6 {
    border-left: none;
}

#block-2, #block-5, #block-8 {
    border-right: none;
}

#block-6, #block-7, #block-8 {
    border-bottom: none;
}

.profile {
    display: flex;
    text-transform: uppercase;
    align-items: center;
}

p {
    padding-right: 20px;
    padding-left: 20px;
    font-size: 1.3rem;
}

button {
    width: 100px;
    height: 50px;
    margin-left: 30px;
    margin-right: 30px;
    border: 0;
    border-radius: 50px;
    background: linear-gradient(135deg, hsl(0, 80%, 86%), hsl(0, 74%, 74%));
    background-color: hsl(0, 74%, 74%);
    transition: 400ms;
    cursor: pointer;
    transition: 0.6s;
}

button:hover {
    transform: translateY(15px);
    background: linear-gradient(135deg, hsl(0, 100%, 96%), hsl(0, 80%, 86%));
}

button:active {
    background: #EE8C8C;
}

.playerVic {
    color: hsla(121, 87%, 70%, .9);
}
  
.computerVic {
    color: hsla(0, 80%, 53%, .9);
}

.tie {
    color: hsla(16, 84%, 65%, .9);
}