html {
   height: 100vh;
   box-sizing: border-box;
}

body {
  background-color: #830c0cda;
}

#sub_mainHeader .sub_header_first_text {
  font-size: 25px;
}

#sub_mainHeader .sub_text {
  font-size: 20px;
}

 /* card layout  */
 #sublLevelButtons .all_card .card {
   height: 105px;
   width: 105px;
   display: inline-block;
   margin: 3px 3px 3px;
   cursor: crosshair;
 }

 /*  card cursor move  */
 #sublLevelButtons .all_card .card:hover {
   border: 3px solid #000000;
 }