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gaia/tv_apps/device-deck/style/devices.css

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+html {
+  font-size: 10px;
+  /* We have Fira Sans as default font in real device. But it isn't default in
+   *    * browser. That's the main reason this line is here.*/
+  font-family: "Fira Sans";
+}
+
+html, body {
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  margin: 0;
+  padding: 0;
+}
+
+#main-section {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+}
+section#header {
+  height: 16rem;
+  background-image: url(images/img_device_bg.png);
+  position: relative;
+}
+
+section#grid {
+  height: calc(100% - 16rem);
+  background-color: #d1d1d1;
+}
+
+#refresh-button {
+  position: absolute;
+  right: 5.6rem;
+  top: 25%;
+}
+
+.devices-container {
+  width: 100%;
+  height: 50%;
+}
+
+.devices-caption {
+  width: 163.6rem;
+  height: 12.6rem;
+  line-height: 12.6rem;
+  color: #323232;
+  font-size: 4.2rem;
+  font-style: italic;
+  padding-left: 14.2rem;
+}
+
+.devices-list {
+  padding-left: 14.2rem;
+  padding-right: 14.2rem;
+}
+
+.devices-list > smart-button[type="app-button"] {
+  background-color: #000;
+  margin: 5.8rem 2.6rem 2.9rem 2.6rem;
+  width: 18rem;
+  height: 18rem;
+}
+
+.devices-list > smart-button[type="app-button"]:before {
+  transform: scale(0.536);
+  line-height: 13rem;
+}
+
+.devices-list > smart-button[type="app-button"].focused:before {
+  color: #ffffff;
+}
+
+/** we use :after as label */
+.devices-list > smart-button[type="app-button"]:after {
+  width: 18rem;
+  height: 5rem;
+  font-size: 1.6rem;
+}