*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.landing{
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 40px;
}

.landing img {
  max-width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 640px) {
  .landing img{
    width: 450px !important;
    padding: 0 15px;
  }
}

@media (max-width: 390px) {
  .landing img{
    width: 320px !important;
    padding: 0 15px;
    
  }
}

@media (max-width: 780px) {
  .landing img{
    width: 560px !important;
     padding: 0 15px;
   
  }
}