body {
     font-family: Arial, sans-serif;
     margin: 30px;
     text-align: center;
     background-image: url("https://img.freepik.com/free-vector/mathematical-geometric-background-vector-gradient-blue-education-remix_53876-114100.jpg?semt=ais_hybrid&w=740&q=80");
     background-size: cover;
     margin-top: 10%;
     font-size: 1.7rem;
     background-repeat: no-repeat;
     animation: zoomBG 10s infinite alternate ease-in-out;
     height: 76vh;
     color: #ffffff;
 }

 @keyframes zoomBG {
     0% {
         background-size: 100% 100%;
     }

     100% {
         background-size: 110% 110%;
     }
 }





 .sent {
     margin: 5px 0;
     text-align: center;
     font-weight: 600;
 }