style.css

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background: #222;
    overflow: hidden;
}

#error {
    background-color: red;
}

#pbrMath {
    position: absolute;
    left: 10px;
    bottom: 10px;
    color: white;
    padding: 15px;
    font-size: 50px;
    font-style: italic;
    text-align: center;
}

#inputs {
    position: absolute;
    left: 10px;
    bottom: 120px;
    color: white;
    padding: 15px;
    font-size: 50px;
    font-style: italic;
    text-align: center;
}


.pbrMathSub {
    padding: 0px;
    font-size: 50px;
    color: white;
    display: inline-block;
    vertical-align: middle;
}

.reset {
    display: inline;
}

a.source,
a.source:visited {
    position: absolute;
    top: 8px;
    left: 10px;
    color: white;
    text-decoration: none;
}

a.source:hover {
    text-decoration: underline;
}

.activeComponent {
    background-color: darkslategray;
}

.pinnedComponent {
    background-color: darkslateblue;
}

hr.line {
    display: block;
    padding: 0;
    border: 1px solid;
    color: white;
    text-align: center;
    width: 100%;
    margin: 1px;
}

.note {
    font-style: normal;
    font-size: 19px;
}

.pixelPicker {
    position: absolute;
    right: 0px;
    bottom: 0px;
    color: white;
    height: 30px;
    padding: 10px;
    font-family: monospace;
    white-space: nowrap;
}

.pixelPicker span {
    display: inline-block;
    white-space: pre;
}

#pixelPickerColor {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    border: 1px solid black;
}

@keyframes spinKeys {
    0%,50%,100% {
        animation-timing-function: cubic-bezier(0.5,0.5,0.5,0.5);
    }

    0% {
        transform: rotate(0);
    }

    50% {
        transform: rotate(180deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#loadSpinner {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    margin: -50px 0 0 -50px;
    border: 5px solid;
    border-color: #fff transparent transparent transparent;
    border-radius: 50%;
    animation: spinKeys 4s infinite linear;
}