*{
    margin: 0;
    padding: 0;
}

body{
    background-color: black;
    color: white;
    font-family: 'Roboto', sans-serif;
}
.parentdiv{
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.imgdiv{ 
    text-align: center;
}
.imgdiv img{
    width: 30%; 
} 
@media only screen and (min-width:480px) and (max-width:820px){


    .imgdiv img{
        width: 70%; 
    }
    .parentdiv{
        height: 100vh;
        display: flex;
        flex-direction: column; 
    }
  

}


@media only screen and (max-width:480px){


    .imgdiv img{
        width: 70%; 
    }
    .parentdiv{
        height: 100vh;
        display: flex;
        flex-direction: column; 
    }
   
 

}