.mybox {
  background-size: inherit;
  background-size: cover;
  background-size: contain;
  background-size: auto;
  background-size: 10%;
  background-size: 12px;
  background-size: auto auto;
  background-size: 10% 10%;
  background-size: 10px 10px;
  background-size: auto 10%;
  background-size: auto 10px;
  background-size: 10px 10%;
  background-size: 10% 10px;
  background-size: cover, contain;
  background-size: cover, contain, cover;
  background-size: 10px, 10%, auto;
  background-size: 10px auto, cover, 10%;
  background-size: 10% -10px; /* Noncompliant !{Update the invalid value of property "background-size". Expected format: [ cover | contain | [ <length> | <percentage> | auto ]{1,2} ]#}! */
  background-size: -10% -10px; /* Noncompliant */
  background-size: cover cover; /* Noncompliant */
  background-size: 12px cover; /* Noncompliant */
  background-size: contain 10%; /* Noncompliant */
  background-size: auto, cover auto; /* Noncompliant */
  background-size: 10; /* Noncompliant */
  background-size: abc; /* Noncompliant */
  background-size: abc abc; /* Noncompliant */
  background-size: abc abc, abc; /* Noncompliant */
  background-size: cover !important;
  background-size: cover, 10px 12% !important;
  background-size: !important cover, 10px 12%;
}