style.css

body {
    padding: 0;
    margin: 0;
    font-family: 'Quicksand', sans-serif;
    height: 0;
}

#toolbar {
    background-color: #222;
    display: flex;
    flex-direction: row;
    vertical-align: middle;
    padding: 8px;
}

.tool {
    display: inline-block;
    margin-left: 2px;
}

a:first-child {
    text-decoration: none;
    color: white;
    display: inline-block;
    vertical-align: middle;
    font-weight: 400;
    font-size: 26px;
    margin-left: 10px;
    margin-right: 10px;
    vertical-align: middle;
    pointer-events: none;
}

a:nth-child(2),
a:nth-child(3) 
 {
    text-decoration: none;
    color: white;
    display: inline-block;
    vertical-align: middle;
    font-weight: 600;
    font-size: 26px;
    margin-left: 10px;
    margin-right: 10px;
    vertical-align: middle;
    pointer-events: none;
}

#colorpicker {
    display: none;
    background-color: rgba(0, 0, 0, 0.8);
    position: absolute;
    left: 0px;
    top:0px;
    height: 100vh;
    width: 100vw;

}

#btn_done {
    background-color: teal;
    display: inline-block;
    font-weight: 600;
    padding: 4px;
    margin: 4px;
}