*{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}
body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
}
.S{
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    background: linear-gradient(#F21212, #DF8225);
}
.b1{
   width: 80%;
   height: 60%;
   background-color: #E629A0;
   animation: color 60s ease infinite;
}
@keyframes color {
    0%,100%{
        background-color: #E629A0;
    
    }
    50%{
        background-color: #c21010;
    }
}

@media only screen and (max-width: 600px){
    .S{
        width: 450px;
        height: 450px;

      }

}

@media only screen and (min-width: 601px){
    .S{
        width: 500px;
        height: 500px;

      }

      
}

@media only screen and (min-width: 1200px){
    .S{
    width: 600px;
    height: 600px;
  }

  
}