CSS: stylelint fixes

Use logical directions, drop obsolete vendor prefix, and various stylistic fixes.

Done automatically with `stylelint --fix`. Fixes e.g.
```
Expected "#EEEEEE" to be "#EEE"                          color-hex-length
Unexpected "min-height" property. Use "min-block-size".  liberty/use-logical-spec
Unexpected vendor-prefix "-moz-transform"        property-no-vendor-prefix
Expected empty line before rule  rule-empty-line-before
```

The only deliberate `moz-*` rule is our Firefox specific checkbox fix,
ignore property-no-vendor-prefix for that one.

examples/long-running-process/long-running.css

@@ -1,10 +1,10 @@
 pre {
-    background-color: #EEEEEE;
-    min-height: 5em;
-    max-height: 50em;
+    background-color: #EEE;
+    min-block-size: 5em;
+    max-block-size: 50em;
     overflow-y: scroll;
 }
 
 #command {
-    min-width: 50ex;
+    min-inline-size: 50ex;
 }

pkg/lib/patternfly/patternfly-5-overrides.scss

@@ -186,6 +186,7 @@ select.pf-v5-c-form-control {
 // Override default spacing from lg -> md
 .pf-v5-l-flex {
   gap: var(--pf-v5-l-flex--spacer-base);
+
   &:not([class*="pf-m-space-items-"]) {
     > * {
       --pf-v5-l-flex--spacer--column: 0;
@@ -226,7 +227,7 @@ select.pf-v5-c-form-control {
   &__input {
     margin-block: auto;
     align-self: unset;
-    -moz-transform: unset;
+    transform: unset;
   }
 
   // Slightly shift the radio and check widgets
@@ -234,9 +235,9 @@ select.pf-v5-c-form-control {
     // Shift up the checks/radios for (most) browsers
     transform: translateY(-1px);
     // Mozilla doesn't need the translation, so undo it
-    -moz-transform: none;
+    -moz-transform: none;  // stylelint-disable property-no-vendor-prefix
     // If the size is not specified, browsers may size it between 12px - 16px; so let's set it to the font size (which winds up 16px)
-    height: var(--pf-v5-global--FontSize--md);
+    block-size: var(--pf-v5-global--FontSize--md);
     // Use the height for width too
     aspect-ratio: 1;
   }

pkg/shell/nav.scss

@@ -258,6 +258,7 @@ $desktop: $phone + 1px;
       display: block;
     }
   }
+
   .pf-v5-c-select__toggle-arrow {
     font-size: 1.3rem;
     transition-duration: 0.3s;

test/verify/files/embed-cockpit/embed.css

@@ -1,21 +1,25 @@
 #embed-links .card-pf-body {
     opacity: 0.3;
 }
+
 #embed-here {
     display: block;
-    width: 1024px;
-    height: 768px;
+    inline-size: 1024px;
+    block-size: 768px;
 }
+
 #embed-address {
     display: block;
-    margin-bottom: 20px;
+    margin-block-end: 20px;
 }
+
 a[target] {
     cursor: pointer;
 }
+
 iframe {
     display: block;
-    width: 100%;
-    height: 100%;
+    inline-size: 100%;
+    block-size: 100%;
     border: 1px solid #ddd;
 }