added style for component write, for chat

luckydiamond/src/components/WritechatComponent.vue

@@ -0,0 +1,18 @@
+<template>
+  <div class="write">
+    <div class="write__content">
+      <input type="text" placeholder="Напишите сообщение...">
+      <button type="submit"><img src="@/assets/icons-chat/sendmsg-icon.png"></button>
+    </div>
+  </div>
+</template>
+
+<script>
+export default {
+
+}
+</script>
+
+<style>
+
+</style>