h1 {
    text-align: center;
    margin: auto;
    padding: 10px 50px 10px 50px;
    display: block;
}

h2 {
    font-weight: normal;
    text-align: center;
    margin: auto;
    display: block;
}

#instrum-box select {
    background-color: #4caf50;
    color: white;
    border: 2px solid black;
    border-radius: 5px;
    margin: 10px auto;
    width: 150px;
    cursor: pointer;
    display: block;
}

#instrum-box select:hover {
    background-color: #427244;
}

#upload-box {
    text-align: center;
}

#upload-box label {
    font-size: 1.25em;
    color: white;
    border: 2px solid black;
    border-radius: 5px;
    background-color: #4caf50;
    padding: 5px 5px 5px 5px;
    margin: 10px auto;
    text-align: center;
    width: 125px;
    cursor: pointer;
}

#upload-box button {
    margin: 10px auto;
}

#upload-box label:hover {
    background-color: #427244;
}

#player-buttons button {
    background-color: #4caf50;
    color: white;
    border: 2px solid black;
    border-radius: 5px;
    padding: 10px 50px 10px 50px;
    margin: 10px auto;
    width: 200px;
    cursor: pointer;
    display: block;
}

#player-buttons button:hover {
    background-color: #427244;
}

#play-btn {
    font-size: 22px;
    background-color: #4caf50;
    color: white;
    border: 2px solid black;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
}

.btn-style:hover {
    background-color: #427244;
}

.input-file {
    width: 0.1px;
    height: 0.1px;
    opacity: 0;
    overflow: hidden;
    position: absolute;
    z-index: -1;
}