• Create ticket/issue

Follow the guide to enable codebase context checks.

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status:
Not applicable here: The PR only adds SCSS mixins and style changes without application logic; audit trail
requirements cannot be evaluated from these diffs.

@mixin flexbox() {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

@mixin inline-flex() {
  display: -webkit-inline-box;
  display: -webkit-inline-flex;
  display: -moz-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
}


@mixin align-items($alignment) {
    -webkit-box-align: $alignment;
    -webkit-align-items: $alignment;
    -ms-flex-align: $alignment;  


 ... (clipped 11 lines)

Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Not applicable here: The changes are purely SCSS/CSS; there are no error paths or edge-case handling to assess
within the provided diffs.

@mixin flexbox() {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

@mixin inline-flex() {
  display: -webkit-inline-box;
  display: -webkit-inline-flex;
  display: -moz-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
}


@mixin align-items($alignment) {
    -webkit-box-align: $alignment;
    -webkit-align-items: $alignment;
    -ms-flex-align: $alignment;  


 ... (clipped 11 lines)

Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status:
No user errors here: Styling-only changes do not expose error messages; security of error handling cannot be
evaluated from these SCSS diffs.

  @include flexbox();
  @include align-items(center);
}

Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status:
No logging present: No logging code is added or modified; log structure and sensitivity cannot be assessed
from CSS/SCSS changes.

.extra-info-wrapper {
  @include order(2);

  line-height: 1.5;
  .badge-wrapper {

Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status:
Not applicable here: The PR modifies presentation styles and adds mixins; there is no input handling to
validate for security within these diffs.

@include inline-flex();

@include align-items(baseline);

Replace the newly added manual SCSS mixins for vendor prefixes with an automated
tool like Autoprefixer. This change simplifies the SCSS code and improves
long-term maintainability by handling prefixes in the build step.

Examples:

@mixin flexbox() {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

@mixin inline-flex() {
  display: -webkit-inline-box;

 ... (clipped 22 lines)

      @include flexbox();
      @include align-items(center);

Solution Walkthrough:

Before:

// in mixins.scss
@mixin flexbox() {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

// in header.scss
.contents {
  @include flexbox();
  @include align-items(center);
}

After:

// (In build configuration, e.g., postcss.config.js)
// module.exports = {
//   plugins: [
//     require('autoprefixer')
//   ]
// }

// in mixins.scss
// The flexbox(), inline-flex(), align-items(), and order() mixins are removed.

// in header.scss
.contents {
  display: flex;
  align-items: center;
}

Update the align-items mixin to correctly handle vendor prefixes by adding
-moz-box-align, removing the invalid -ms-align-items, and mapping modern
alignment values to their legacy equivalents.

app/assets/stylesheets/common/foundation/mixins.scss [117-123]

 @mixin align-items($alignment) {
+  // Modern syntax
+  -webkit-align-items: $alignment;
+  align-items: $alignment;
+
+  // IE 10
+  -ms-flex-align: $alignment;
+
+  // Old syntax (Firefox)
+  @if $alignment == flex-start {
+    -moz-box-align: start;
+  } @else if $alignment == flex-end {
+    -moz-box-align: end;
+  } @else {
+    -moz-box-align: $alignment;
+  }
+
+  // Old syntax (Safari, Chrome)
+  @if $alignment == flex-start {
+    -webkit-box-align: start;
+  } @else if $alignment == flex-end {
+    -webkit-box-align: end;
+  } @else {
     -webkit-box-align: $alignment;
-    -webkit-align-items: $alignment;
-    -ms-flex-align: $alignment;  
-    -ms-align-items: $alignment;
-    align-items:$alignment;
+  }
 }

• Apply / Chat

Remove the now-obsolete float and clear properties from .small-action and its
children, as they have no effect within a flexbox layout.

app/assets/stylesheets/common/base/topic-post.scss [263-313]

 .small-action {
   @include flexbox();
   @include align-items(center);
 
   .topic-avatar {
     padding: 5px 0;
     border-top: none;
-    float: left;
     i {
 ...
   }
 
   .small-action-desc {
 ...
     .avatar {
       margin-right: 0.8em;
-      float: left;
     }
 ...
   }
 
   button {
     background: transparent;
     border: 0;
-    float: right;
+    margin-left: auto;
   }
 
-  clear: both;
 }

[To ensure code accuracy, apply this suggestion manually]