styles.css

* {
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    background-color: #282c34;
    font-family: 'Source Sans Pro', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.body {
    width: 50%;
    height: 50%;
    border: 1px solid #a4abb7;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
}

.buttons-and-results {
    display: flex;
    justify-content: space-evenly;
    padding: 2rem;
}

.buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1vw;
}

button {
    padding: 0.3rem 1rem;
    cursor: pointer;
}

.rock {
    color: #e3be7a;
}

.rock:hover {
    background-color: #e3be7a;
    color: #282c34;
}

.paper {
    color: #5eaae9;
}

.paper:hover {
    background-color: #5eaae9;
    color: #282c34
}

.scissors {
    color: #bd74d4;
}

.scissors:hover {
    background-color: #bd74d4;
    color: #282c34;
}

.rock, .paper, .scissors {
    border: 1px solid #cc9764;
    background-color: #282c34;
}

.results {
    color: #df6b74;
    display: flex;
    justify-content: center;
    align-items: center;
}

.score-and-winner {
    color: #95bf77;
    display: flex;
    justify-content: center;
    align-items: center;
}

.results, .score-and-winner {
    border: 1px solid #a4abb7;
    width: 13vw;
    height: 15vh;
}

p {
    color: #a4abb7;
    display: flex;
    justify-content: center;
    align-items: center;
}

.buttons-and-results, p {
    width: 100%;
}

@media only screen and (max-width: 1550px) {
    .results, .score-and-winner {
        width: 20vw;
    }
}

@media only screen and (max-width: 1080px) {
    .buttons-and-results {
        flex-direction: column;
        align-items: center;
        gap: 3.5vh;
    }

    .results, .score-and-winner {
        width: 30vw;
    }
}

@media only screen and (max-width: 680px) {
    .results, .score-and-winner {
        width: 40vw;
    }
}

@media only screen and (max-width: 550px) {
    .body {
        width: 70%;
        height: 70%;
    }

    .results, .score-and-winner {
        width: 60vw;
    }
}