Create style.css

style.css

@@ -0,0 +1,110 @@
+* {
+  box-sizing: border-box;
+  padding: 0;
+  margin: 0;
+  font-family: sans-serif
+}
+
+html,
+body {
+  height: 100%
+}
+
+body {
+  padding: 16px 32px
+}
+
+body,
+#container,
+#upload-button {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center
+}
+
+h1 {
+  text-align: center
+}
+
+#container {
+  position: relative;
+  width: 640px;
+  height: 420px;
+  max-width: 100%;
+  max-height: 100%;
+  border: 2px dashed #D1D5DB;
+  border-radius: .75rem;
+  overflow: hidden;
+  margin-top: 1rem;
+  background-size: 100% 100%;
+  background-position: center;
+  background-repeat: no-repeat
+}
+
+#mask-output {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  pointer-events: none
+}
+
+#upload-button {
+  gap: .4rem;
+  font-size: 18px;
+  cursor: pointer
+}
+
+#upload {
+  display: none
+}
+
+svg {
+  pointer-events: none
+}
+
+#example {
+  font-size: 14px;
+  text-decoration: underline;
+  cursor: pointer
+}
+
+#example:hover {
+  color: #2563eb
+}
+
+canvas {
+  position: absolute;
+  width: 100%;
+  height: 100%
+}
+
+#status {
+  min-height: 16px;
+  margin: 8px 0
+}
+
+input[type=range] {
+  position: absolute;
+  top: 10px;
+  right: 10px;
+  z-index: 1
+}
+
+#drop-zone {
+  display: none;
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  justify-content: center;
+  align-items: center;
+  font-size: 20px;
+  background-color: rgba(0, 0, 0, 0.5);
+  color: white;
+}
+
+#container.drag-over #drop-zone {
+  display: flex;
+}