* {
    margin: 0;
    padding: 0;

    box-sizing: border-box;
    font-family: sans-serif;
}

body{
    position: relative;

    width: 100%;
    height: 100vh;

    background: #000;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

}
div.header {
    /*position: absolute;*/
    text-align: center;

    left: 0;
    top: 0;
    padding: 20px;
    width: 100vw;

    background-color: bisque;
    color: #fffa;
    color: #333;
    font-size: 16px;
}
div.header ul.links{
    list-style: none;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
}
div.header ul.links li{
    padding:5px;
    margin:5px;
    border-radius: 5px;
    background-color: chocolate;
}

div.notensystem {
    /*border:1px solid red;*/
    padding:20px 10px;
    /*position: relative;*/
    /*overflow: hidden;*/
    position: relative;
    display: inline-block;

    width: 100%;
    height: 100px;

    background: #fff;

    /*display: flex;*/
    /*flex-direction: row;*/
    /*justify-content: center;*/
    /*align-items: center;*/
}
div.tuner {
    position: relative;

    width: 100%;
    height: 100vh;

    background: #000;

    display: flex;
    justify-content: center;
    align-items: center;
}

.circle {
    position: absolute;

    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    width: 300px;
    height: 300px;
    border-top: 3px solid #fff;

    border-radius: 50%;
}

.tuner > span {
    position: absolute;
// top: 240px;
    top: calc((100vh / 2) - 180px);

    width: 20px;
    height: 20px;

    background: #fff;
}

.tuner > span p {
    text-align: center;
}

.circle > span {
// position: absolute;
    top: 150px;

    width: 20px;
    height: 20px;

    background: #fff;

    display: flex;
    justify-content: center;
    align-items: center;
}

.circle > span:nth-child(2) {
    position: absolute;
    left: -10px;
}

.circle > span:nth-child(3) {
    position: absolute;
    right: -10px;
}

.dial {
    position: absolute;
    top: 10%;
    left: 50%;

    width: 10px;
    height: 120px;
    background: #fff;

    border-top-left-radius: 10px;
    border-top-right-radius: 10px;

    transform-origin: bottom center;

//// CSS Animation (Replaced with JS) - Rotating the dial from -90 to +90 of 180 deg.
//// Uncomment to test the UI with CSS only.
//// It has been tested and working.

// animation: MoveDial_90CW 6s linear infinite;
    transform: rotate(
        -90deg
    ); // Starting from left side. Without it will start form the 90deg position.
transition-delay: 0.1s;
}

.Tune {
    width: 100px;
    height: 50px;
    margin-top: 100px;
    background: #fff;

    display: flex;
    justify-content: center;
    align-items: center;
}


/*.Tune h3*/
/*{*/
/*     transition-delay: 0.15s;*/
/*}*/


.circle.active {
    border-top: 3px solid rgb(6, 245, 6);
}
.dial.active,
.Tune.active,
.natural.active {
    background: rgb(6, 245, 6);
}

.flat.active,
.sharp.active {
    background: rgb(255, 0, 0, 0.7);
    color: #fff;
}

.Tune h3 {
    font-size: 50px;
    font-weight: 700;
}

.Tune.active h3 {
    color: rgba(0, 0, 0, 0.8);
}

/**
 Animation - Rotating the dial from -90 to +90 of 180 deg
 */
@keyframes MoveDial_90CW {
    0%,
    100% {
        transform: rotate(-90deg);
    }
    50% {
        transform: rotate(90deg);
    }
}
.footer {
    position: absolute;
    text-align: center;

    left: 0;
    bottom: 0;
    padding: 20px;
    width: 100vw;

    background-color: bisque;
    color: #fffa;
    color: #333;
    font-size: 16px;
}