/*
  Click and drag to attract
  Right click to repulse
  Mouse-wheel click to create a time dilation field
  Use the Controls to decrease or increase
  the particle count to tweak performance.
*/

body, html {
    margin: 0;
    padding: 0;
}

body {
    background-color: black;

canvas {
    display: block;
    cursor: crosshair;
}

}

@keyframes fadeToNearBlack {
    to {
        background: rgba(0, 0, 0, 0.9);
    }
}

@keyframes goBig {
    to {
        opacity: 1;
    }
}

dialog img {
    width: 100%;
    height: auto;
}

dialog {
    border: none;
    opacity: 0;
}

dialog[open] {
    animation: goBig 1s .4s forwards;
    width: 70%;
    margin: auto;
    position: absolute;
    max-width: 700px;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

dialog[open]::backdrop {
    animation: fadeToNearBlack 1s forwards;
}

.backdrop {
    animation: fadeToNearBlack 1s forwards;
}

dialog button {
    display: inline-block;
    padding: 0.3em 1.2em;
    margin: 0 0.3em 0.3em 0;
    border-radius: 2em;
    border: none;
    box-sizing: border-box;
    text-decoration: none;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    color: #FFFFFF;
    background-color: #4eb5f1;
    text-align: center;
    transition: all 0.2s;
    width: 10%;
}

button:hover {
    background-color: #4095c6;
}

button:focus {
    outline: none;
    box-shadow: none;
}

@media all and (max-width: 30em) {
    button {
        display: block;
        margin: 0.2em auto;
    }
}