Add hot fix.

Author: mrmrs

css/tachyons.css

@@ -250,8 +250,8 @@ img { max-width: 100%; }
   Often used in combination with background image set as an inline style
   on an html element.
 */
-.cover { background-size: cover; }
-.contain { background-size: contain; }
+.cover { background-size: cover !important; }
+.contain { background-size: contain !important; }
 /*
 
    OUTLINES
@@ -1655,8 +1655,8 @@ code, .code { font-family: Consolas, monaco, monospace; }
 /* Uncomment out the line below to help debug layout issues */
 /* @import './_debug'; */
 @media screen and (min-width: 30em) {
- .cover-ns { background-size: cover; }
- .contain-ns { background-size: contain; }
+ .cover-ns { background-size: cover !important; }
+ .contain-ns { background-size: contain !important; }
  .outline-ns { outline: 1px solid; }
  .outline-transparent-ns { outline: 1px solid transparent; }
  .outline-0-ns { outline: 0; }
@@ -1998,8 +1998,8 @@ code, .code { font-family: Consolas, monaco, monospace; }
  .v-btm-ns { vertical-align: bottom; }
 }
 @media screen and (min-width: 30em) and (max-width: 60em) {
- .cover-m { background-size: cover; }
- .contain-m { background-size: contain; }
+ .cover-m { background-size: cover !important; }
+ .contain-m { background-size: contain !important; }
  .outline-m { outline: 1px solid; }
  .outline-transparent-m { outline: 1px solid transparent; }
  .outline-0-m { outline: 0; }
@@ -2344,8 +2344,8 @@ code, .code { font-family: Consolas, monaco, monospace; }
  .v-btm-m { vertical-align: bottom; }
 }
 @media screen and (min-width: 60em) {
- .cover-l { background-size: cover; }
- .contain-l { background-size: contain; }
+ .cover-l { background-size: cover !important; }
+ .contain-l { background-size: contain !important; }
  .ba-l { border-style: solid; border-width: 1px; }
  .bt-l { border-top-style: solid; border-top-width: 1px; }
  .br-l { border-right-style: solid; border-right-width: 1px; }

css/tachyons.min.css

@@ -14,20 +14,20 @@
   on an html element.
 */
 
-  .cover { background-size: cover; }
-  .contain { background-size: contain; }
+  .cover { background-size: cover!important; }
+  .contain { background-size: contain!important; }
 
 @media (--breakpoint-not-small) {
-  .cover-ns { background-size: cover; }
-  .contain-ns { background-size: contain; }
+  .cover-ns { background-size: cover!important; }
+  .contain-ns { background-size: contain!important; }
 }
 
 @media (--breakpoint-medium) {
-  .cover-m { background-size: cover; }
-  .contain-m { background-size: contain; }
+  .cover-m { background-size: cover!important; }
+  .contain-m { background-size: contain!important; }
 }
 
 @media (--breakpoint-large) {
-  .cover-l { background-size: cover; }
-  .contain-l { background-size: contain; }
+  .cover-l { background-size: cover!important; }
+  .contain-l { background-size: contain!important; }
 }