diff --git a/enrol/manual/yui/quickenrolment/assets/skins/sam/quickenrolment.css b/enrol/manual/yui/quickenrolment/assets/skins/sam/quickenrolment.css
index 7921c9445e8..20076cc89f8 100644
--- a/enrol/manual/yui/quickenrolment/assets/skins/sam/quickenrolment.css
+++ b/enrol/manual/yui/quickenrolment/assets/skins/sam/quickenrolment.css
@@ -1,3 +1,4 @@
+/* stylelint-disable unit-blacklist */
 /**************************************
 
 Structure of the user enroller panel
diff --git a/enrol/yui/otherusersmanager/assets/skins/sam/otherusersmanager.css b/enrol/yui/otherusersmanager/assets/skins/sam/otherusersmanager.css
index 0cc06979aba..5ee91536fc4 100644
--- a/enrol/yui/otherusersmanager/assets/skins/sam/otherusersmanager.css
+++ b/enrol/yui/otherusersmanager/assets/skins/sam/otherusersmanager.css
@@ -1,3 +1,4 @@
+/* stylelint-disable unit-blacklist */
 /**************************************
 
 Structure of the other user role assignment panel
diff --git a/grade/grading/form/guide/styles.css b/grade/grading/form/guide/styles.css
index a0b71490415..18d22507ed5 100644
--- a/grade/grading/form/guide/styles.css
+++ b/grade/grading/form/guide/styles.css
@@ -86,7 +86,8 @@
     font-weight: bold;
 }
 
-/* Make invisible the buttons 'Move up' for the first criterion and 'Move down' for the last, because those buttons will make no change */
+/* Make invisible the buttons 'Move up' for the first criterion and 'Move down' for
+   the last, because those buttons will make no change */
 .gradingform_guide.editor .criterion.first.last .controls .delete input,
 .gradingform_guide.editor .criterion.first .controls .moveup input,
 .gradingform_guide.editor .criterion.last .controls .movedown input {
diff --git a/grade/grading/form/rubric/styles.css b/grade/grading/form/rubric/styles.css
index e6cf4ba4df2..6a0244d5545 100644
--- a/grade/grading/form/rubric/styles.css
+++ b/grade/grading/form/rubric/styles.css
@@ -152,7 +152,8 @@
     padding-right: 5px;
 }
 
-/* Make invisible the buttons 'Move up' for the first criterion and 'Move down' for the last, because those buttons will make no change */
+/* Make invisible the buttons 'Move up' for the first criterion and
+   'Move down' for the last, because those buttons will make no change */
 .gradingform_rubric.editor .criterion.first .controls .moveup input,
 .gradingform_rubric.editor .criterion.last .controls .movedown input {
     display: none;
diff --git a/mod/assign/styles.css b/mod/assign/styles.css
index 7a7db06e79d..9b802267c5f 100644
--- a/mod/assign/styles.css
+++ b/mod/assign/styles.css
@@ -1,3 +1,5 @@
+/* stylelint-disable max-line-length */
+/* FIXME: MDL-55370: remove this stylelint disable */
 .path-mod-assign div.gradingnavigation div {
     float: left;
     margin-left: 2em;
diff --git a/mod/book/tool/print/print.css b/mod/book/tool/print/print.css
index ab0c0ba90e0..244867ef2ff 100644
--- a/mod/book/tool/print/print.css
+++ b/mod/book/tool/print/print.css
@@ -1,4 +1,3 @@
-/*csslint important:false */
 #page-mod-book-print {
     color: #000;
     background-color: #fff;
@@ -142,6 +141,6 @@
 
 @media print {
     .hidden-print {
-        display: none !important;
+        display: none !important; /* stylelint-disable-line declaration-no-important */
     }
 }
diff --git a/mod/scorm/styles.css b/mod/scorm/styles.css
index 933c076263c..1b62c85e96a 100644
--- a/mod/scorm/styles.css
+++ b/mod/scorm/styles.css
@@ -240,7 +240,7 @@
 #page-mod-scorm-player #scormpage div.yui3-u-1-5,
 #page-mod-scorm-player #scormpage div.yui3-u-1-24 {
     display: inline-block;
-    *display: inline;
+    *display: inline; /* stylelint-disable-line */
     zoom: 1;
     letter-spacing: normal;
     word-spacing: normal;