index.css

#control-row {
    display: flex;
    flex-direction: row;
    /* justify-content: center; */
    width: 100%;
    padding: 5px;
}

#control-row > div {
    margin: 5px;
}

#left-control-column {
    display: flex;
    flex-direction: column;
    width: fit-content;
}

#left-control-column .ui.slider {
    width: 150px;
}

#left-control-column .ui.input {
    width: 80px;
    height: 30px;
    margin-left: 10px;
}

#left-control-column > div {
    width: fit-content;
    display: flex;
    flex-direction: row;
    align-items: center;
}

#left-control-column > div > span {
    width: 100px;
}

#right-control-column {
    display: flex;
    flex-direction: column;
    width: fit-content;
}

#right-control-column > div > span {
    position: relative;
    right: 0;
    left: auto;
}

#right-control-column > div {
    width:150px;
    margin-top: 5px;
}

#keyboard-buttons {
    position: relative;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

#keyboard-buttons > span {
    padding: 5px;
}

#keyboard {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    margin-top: 10;
    height: 100px;
}

#editor {
    flex: 1;
    height: 500px;
}

.white {
    width: 20px;
    height: 100px;
    position: absolute;
    top: 0;
    border-right-style: none;
    border-width: 1px;
    border-color: black;
    background: white;
    display: flex;
    justify-content: center;
    color: black;
    align-items: flex-end;
}

.black {
    width: 10px;
    height: 60px;
    position: absolute;
    border-color: black;
    border-width: 1px;
    background: black;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    color: white;
}

.black:hover {
    background-color: dimgrey;
}

.white:hover {
    background-color: lightgray;
}

#overlay {
    background: rgba(0, 0, 0, .9); 
    color: #fff;
    cursor: pointer;
    width:      100%;
    height:     100%; 
    z-index:    10;
    top:        0; 
    left:       0; 
    position:   fixed;    
    display: flex;
    justify-content: center;
    align-items: center;
}

.overlay-text {
    width: fit-content;
    margin: auto;
    z-index:    11;
}