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

h1
{
  text-align: center;  
}

pre
{
  width   : max-content;
  cursor  : pointer;
  transition  : all 1s ease-in-out;
  margin: auto;
  padding: 15px;
}

pre:hover
{
    filter  : drop-shadow(15px 15px red)
  
}

.div
{
  display: flex; 
}

.img1
{
  margin: .5rem 5rem 0 0; 
  border-radius: 100%;
}