* {
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

img {
    width: 100%;
    height: auto;
}

.container {
    min-height: 100%;
    overflow-y: hidden;
    position: relative;
}

.center {
    position: absolute;
    top: 50%;
    left:50%;
}

.disconnected {
    background-color: #ee8d8d;
}

#btn-bluetooth {
    color: #ffffff;
    border: none;
    background: none;
    text-transform: uppercase;
    font-size: 24px;
    margin-left:-25px;
    font-weight: bold;
}