main {
    margin: auto;
    max-width: 1200px;
    width: 100%;
}

.ppm {
    max-width: 1000px;
    margin: auto;
    width: 100%;
    overflow: auto;
}

.ppm #controls {
    background-color: var(--clr-bg-nav);
    color: var(--clr-text-primary);
    font-family: var(--fonts);
    padding: 1rem;
    border: 1px solid var(--clr-border-nav-item);
    border-radius: 4px;
    max-width: 320px;
    -webkit-box-shadow: 0 0 10px var(--clr-overlay-bg);
    box-shadow: 0 0 10px var(--clr-overlay-bg);
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    margin: 1em auto;
}

.ppm #canvas {
    display: block;
    margin: auto;
    border: 1px solid var(--clr-links);
    -ms-interpolation-mode: nearest-neighbor;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: -moz-crisp-edges;
    image-rendering: -o-pixelated;
    image-rendering: pixelated;
}

.ppm #controls label {
    display: block;
    margin-top: 0.75rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
    color: var(--clr-text-primary);
}

.ppm #controls input,
.ppm #controls select {
    width: 100%;
    padding: 0.3em 0.5em;
    background-color: var(--clr-bg-nav-hover);
    color: var(--clr-text-primary);
    border: 1px solid var(--clr-border-nav-item);
    border-radius: 4px;
    font-family: var(--fonts);
    font-size: 1rem;
    -webkit-transition: background-color 0.3s ease;
    -o-transition: background-color 0.3s ease;
    transition: background-color 0.3s ease;
    width: 100%;
}

.ppm #controls input:focus,
.ppm #controls select:focus {
    background-color: var(--clr-bg-nav-here);
}

.ppm #controls button {
    margin-top: 1rem;
    padding: 0.5em 1em;
    background-color: var(--clr-button);
    color: var(--clr-text-primary);
    border: 1px solid var(--clr-border-nav-item);
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--fonts);
    font-weight: 600;
    -webkit-transition: background-color 0.3s ease;
    -o-transition: background-color 0.3s ease;
    transition: background-color 0.3s ease;
    width: 100%;
}

.ppm #controls button:hover {
    background-color: var(--clr-bg-nav-hover);
}

.ppm #controls button:active {
    background-color: var(--clr-bg-nav-here);
}