feat: add github conner icon

Author: gywgithub

src/views/Home.vue

@@ -1,6 +1,23 @@
 <template>
   <div class="main justify-center">
-    <div class="flex-column margin-top-15vh">
+    <a class="github-corner" target="_blank" href="https://github.com/gywgithub/vue-d3-examples">
+      <svg width="100" height="100" viewBox="0 0 250 250" style="fill: #409eff; color: #fff; position: absolute; top: 0; border: 0; right: 0">
+        <path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
+        <path
+          d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
+          fill="currentColor"
+          style="transform-origin: 130px 106px"
+          class="octo-arm"
+        ></path>
+        <path
+          d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
+          fill="currentColor"
+          class="octo-body"
+        ></path>
+        <text class="github-corner-text" text-anchor="middle" x="175" y="25" transform="rotate(45)" font-size="30" font-weight="bold">Fork me on Github</text>
+      </svg>
+    </a>
+    <div class="flex-column margin-top-20vh">
       <div class="d-flex justify-center">
         <img src="../assets/img/vue.png" class="d-flex img-width" />
         <img src="../assets/img/d3.svg" class="d-flex img-width img-d3-padding" />
@@ -50,8 +67,42 @@ export default {
 .main {
   text-align: center;
 }
-.margin-top-15vh {
-  margin-top: 15vh;
+
+/** -- github corner -- */
+.github-corner:hover .octo-arm {
+  animation: octocat-wave 560ms ease-in-out;
+}
+
+@keyframes octocat-wave {
+  0%,
+  100% {
+    transform: rotate(0);
+  }
+
+  20%,
+  60% {
+    transform: rotate(-25deg);
+  }
+
+  40%,
+  80% {
+    transform: rotate(10deg);
+  }
+}
+
+@media (max-width: 500px) {
+  .github-corner:hover .octo-arm {
+    animation: none;
+  }
+
+  .github-corner .octo-arm {
+    animation: octocat-wave 560ms ease-in-out;
+  }
+}
+/** -- github corner end -- */
+
+.margin-top-20vh {
+  margin-top: 20vh;
 }
 
 .img-width {