body {
    max-height: 100vh;
    background-image: url("assets/giphy.gif"); 
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    font-family: Arial, Helvetica, sans-serif;
}



#piano {
    margin: auto;
    margin-top: 25vh;
    width: 70%;
    max-width: 800px;
    height: 300px;

    background: rgba(0,0,0,0.75);
    border-radius: 12px;
    border: 2px solid rgba(255,255,255,0.15);
    box-shadow: 0 10px 25px rgba(0,0,0,0.6);
    backdrop-filter: blur(6px);
    position: relative;
}

#keys {
    width: 90%;
    position: absolute;
    bottom: 5px;
    height: 60%;
    margin: 5%;
}



.whiteKeys {
    width: 7%;
    height: 100%;
    background: linear-gradient(to bottom, #ffffff, #dcdcdc);
    position: absolute;
    border: 1px solid #444;
    cursor: pointer;
    transition: all 0.08s ease;
}

.whiteKeys:hover {
    background: #e6e6e6;
}

.whiteKeys:active {
    background: #c9c9c9;
    transform: translateY(3px);
}


.blackKeys {
    width: 3.5%;
    height: 50%;
    background: linear-gradient(to bottom, #2b2b2b, #000);
    position: absolute;
    cursor: pointer;
    border-radius: 3px;
}
#intro {
    text-align: center;
    color: white;
    max-width: 700px;
    margin: auto;
    margin-top: 40px;
    font-size: 1.1rem;
}
.blackKeys:hover {
    background: #111;
}

.blackKeys:active {
    background: #000;
    transform: translateY(2px);
}



#volumeBar {
    position: absolute;
    right: 40px;
    top: 40px;
}

.fa-volume-up {
    color: white;
    font-size: 30px;
}

.fa-plus {
    color: #bbbbbb;
    cursor: pointer;
    font-size: 22px;
}

.fa-minus {
    color: #bbbbbb;
    cursor: pointer;
    font-size: 22px;
}

#volume {
    font-weight: 700;
    font-size: 1.4rem;
    user-select: none;
    color: white;
}