Move CSS style to assets/scss directory

Signed-off-by: Cintia Sánchez García <cynthiasg@icloud.com>

assets/scss/_custom.scss

@@ -1462,6 +1462,13 @@ main.content {
   margin-bottom: 20px;
 }
 
+/* CAREERS */
+
+// Set 14px font size for GitJobs attribution text
+.gitjobs-legend {
+  font-size: 14px;
+}
+
 /* CASE-STUDIES */
 
 // Many of the case studies have small variations in markup and styles;

content/en/careers/_index.html

@@ -10,12 +10,6 @@ menu:
     weight: 70
 ---
 
-<style type="text/css">
-  .gitjobs-legend {
-    font-size: 14px;
-  }
-</style>
-
 <div class="d-flex flex-column justify-content-center mt-4 mt-md-5 px-2 px-md-3 px-lg-0">
   <iframe id="gitjobs" class="mx-auto" src="https://gitjobs.dev/embed?ts_query=kubernetes" style="width:100%;max-width:870px;height:100%;display:block;border:none;"></iframe>
   <div class="mb-4 mb-md-5 mt-1 mx-auto gitjobs-legend">