add kanban style

build/scss/pages/_kanban.scss

@@ -0,0 +1,56 @@
+.content-wrapper.kanban {
+  height: 1px;
+
+  .content {
+    height: 100%;
+    overflow-x: auto;
+    overflow-y: hidden;
+
+    .container,
+    .container-fluid {
+      width: max-content;
+      display: flex;
+      align-items: stretch;
+    }
+  }
+  .content-header + .content {
+    height: calc(100% - ((2 * 15px) + (1.8rem * #{$headings-line-height})));
+  }
+
+  .card {
+    .card-body {
+      padding: .5rem;
+    }
+
+    &.card-row {
+      width: 340px;
+      display: inline-block;
+      margin: 0 .5rem;
+
+      &:first-child {
+        margin-left: 0;
+      }
+
+      .card-body {
+        height: 100%;
+        overflow-y: auto;
+      }
+
+      .card {
+        .card-header {
+          padding: .5rem .75rem;
+        }
+        .card-body {
+          padding: .75rem;
+        }
+      }
+    }
+  }
+  .btn-tool {
+    &.btn-link {
+      text-decoration: underline;
+      padding-left: 0;
+      padding-right: 0;
+    }
+  }
+}

build/scss/parts/_pages.scss

@@ -10,3 +10,4 @@
 @import "../pages/profile";
 @import "../pages/e-commerce";
 @import "../pages/projects";
+@import "../pages/kanban";