* {
   box-sizing: border-box;
}

body {
   background-color: rgb(122, 122, 122);
}

.top-margin {
   padding-top: 80px;
   padding-bottom: 80px;
}

.myCard {
   width: 80%;
   height: 400px;
   margin: auto;
}

#myHeading {
   color: white;
   font-weight: bolder;
   font-size: 4rem;
   text-align: center;
   padding: 50px 5px;
}

#myBody {
   margin-top: 20px;
}

#myBody h1 {
   text-align: center;
   font-size: 10rem;
}

@media (max-width: 768px) {
   #myHeading {
      font-size: 3rem;
   }
}

@media (max-width: 576px) {
   #myHeading {
      font-size: 2rem;
   }
}