main.css

body {
  width: 100%;
  max-width: 500px;
  margin: 1em auto;
  background-color: white;
  display: block;
  font-family: sans-serif;
  font-size: 10px;
}

.header {
  width: 100%;
  max-width: 500px;
  font-family: 'Chonburi', sans-serif;
  font-size: 4em;
  margin: 1em auto 0.5em auto;
  text-align: center;
  color: rgb(235, 48, 124);
}

img {
  display: none;
}

canvas {
  width: 100%;
  max-width: 500px;
}

.output {
  position: relative;
  width: 100%;
  max-width: 500px;
}
#result {
  position: absolute;
  top: 0;
}

input#file {
  width: 200px;
} 
#options-grid, #options-shuffle, #options-save {
  visibility: hidden;
}

.center {
	text-align: center;
}
.buttons {
  margin: 1em auto;
  width: 280px;
}
.button {
  display: inline-block;
  padding: 0.5em;
  text-align: center;
  font-size: 1em;
  background-color: white;
  border: 1px solid rgb(235, 48, 124);
  color: rgb(235, 48, 124);
}
.button:hover {
  background-color: rgb(235, 48, 124);
  color: white;
  cursor: pointer;
}
.noselect {
  -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
     -khtml-user-select: none; /* Konqueror HTML */
       -moz-user-select: none; /* Firefox */
        -ms-user-select: none; /* Internet Explorer/Edge */
            user-select: none; /* Non-prefixed version, currently
                                  supported by Chrome and Opera */
}

/* .logo {
  position: relative;
  display: inline-block;
  height: 50px;
  line-height: 50px;
  vertical-align: middle;
  background-size: cover;
  background-repeat:no-repeat;
  background-position: center center;
}
.logo a span {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}
.boonmeelab {
  background-image: url('logo_boonmeelab.png');
  width: 150px;
  margin: 0 -10px;
} */