body {
    background-image: linear-gradient(
        to bottom,
        black,
        white
        ), url("hall.jpg");
    background-size: cover;
    background-position: center;
    background-blend-mode: darken;
}

h1 {
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    margin-top: 200px;
    font-family: 'Dancing Script', cursive;
}

h2 {
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

h4 {
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: -50px;
    width: 300px;
    height: auto;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding: 0;
    margin: 0;
}

.keyboard {
    display: flex;
    position: relative;
    margin-left: 4px;
}

.white {
    width: 40px;
    height: 120px;
    background-color: white;
    border: 4px solid black;
    cursor: pointer;
    outline: none;
    margin-left: -4px;
}

.white.active {
    background-color: rgb(220, 220, 220);
}

.black {
    position: absolute;
    width: 24px;
    height: 80px;
    background-image: linear-gradient(black, #363636);
    border: 3px solid black;
    outline: none;
    cursor: pointer;
    margin-left: -16px;
}

.black.active {
    background-image: linear-gradient(black, #030303);
}

.Db4 {
    left: 38px;
}

.Eb4 {
    left: 74px;
}

.Gb4 {
    left: 146px;
}

.Ab4 {
    left: 182px;
}

.Bb4 {
    left: 218px;
}

.Db5 {
    left: 290px;
}

.Eb5 {
    left: 326px;
}

html {
    height: 100%;
}