html, body {
    margin: 0;
    min-height: 100%;
    background-color: black;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body:-webkit-full-screen {
    width: 100%;
    height: 100%;
}

/* Change default input field text color */
::-webkit-input-placeholder { /* Chrome */
    color: #bbbbbb;
}

:-ms-input-placeholder { /* IE 10+ */
    color: #bbbbbb;
}

::-moz-placeholder { /* Firefox 19+ */
    color: #bbbbbb;
    opacity: 1;
}

:-moz-placeholder { /* Firefox 4 - 18 */
    color: #bbbbbb;
    opacity: 1;
}

/* Spinner style & animation */
.big-spinner {
    border: 16px solid #3498db;
    border-top: 16px solid rgba(0, 0, 0, 0);
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
}

.small-spinner {
    border: 4px solid #3498db;
    border-top: 4px solid rgba(0, 0, 0, 0);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Input Range (slider) style */
input[type='range'] {
    /* see https://css-tricks.com/sliding-nightmare-understanding-range-input/ */
    margin-inline-start: 0;
    margin-inline-end: 0;
}

.volume-slider {
    width: 100%; /* Specific width is required for Firefox. */
    background: transparent; /* Otherwise white in Chrome */
}

.volume-slider::-webkit-slider-thumb {
    margin-top: -5px;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    margin-top: -5px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-runnable-track {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    cursor: pointer;
    border-radius: 5px;
    background: #ffffff;
    outline: none;
}

.volume-slider::-moz-range-track {
    width: 100%;
    height: 5px;
    cursor: pointer;
    border-radius: 5px;
    background: #ffffff;
    outline: none;
}

.timeline-slider {
    -webkit-appearance: none;
    width: 100%;
    border-radius: 5px;
    background: #ffffff00;
    outline: none;
}

.timeline-slider::-moz-range-track {
    background: #ffffff00;
}

.timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #ffffff;
    opacity: 1;
    cursor: pointer;
}

.timeline-slider::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #ffffff;
    opacity: 1;
    cursor: pointer;
}

.no-outline-focus:focus {
    outline: none;
}

.focus-area-slider {
    -webkit-appearance: none;
    width: 100%;
    border-radius: 5px;
    background: #ffffff00;
    outline: none;
}

.focus-area-slider::-moz-range-track {
    background: #ffffff00;
}

.focus-area-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #ffffff;
    opacity: 1;
    cursor: pointer;
}

.focus-area-slider::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #ffffff;
    opacity: 1;
    cursor: pointer;
}