body {
    margin: 0;
    padding: 0;
    /*color: rgba(255, 255, 255, 0.87);*/
    background-color: #b34848; 
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    justify-content: center;
}

#app {
    width: 100%;
    max-width: 620px;
    height: 100vh;
    overflow: hidden;
    /*display: flex;*/
    /*justify-content: center;*/
    /*align-items: center;*/
}

.spritePosition {
    margin: 10px 0 0 10px;
    font-size: 0.8em;
}

.button {
    width: 140px;
    margin: 10px;
    padding: 10px;
    background-color: #000000;
    color: rgba(255, 255, 255, 0.87);
    border: 1px solid rgba(255, 255, 255, 0.87);
    cursor: pointer;
    transition: all 0.3s;

    &:hover {
        border: 1px solid #0ec3c9;
        color: #0ec3c9;
    }

    &:active {
        background-color: #0ec3c9;
    }

    /* Disabled styles */
    &:disabled {
        cursor: not-allowed;
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: rgba(255, 255, 255, 0.3);
    }
}

.background-transition {
    transition: background-color 0.6s ease-in-out;
}