body { 
    display: flex; 
    justify-content: center; /* Center horizontally */ 
    align-items: center; /* Center vertically */ 
    height: 100vh; /* Full viewport height */ 
    margin: 0; /* Remove default margin */ 
    background-color: #f0f0f0; /* Optional background color */ 
} 

.stretch {
    width:100%;
    height:100%;
}
 
.image-container { 
    text-align: center; /* Center the image in the container */ 
} 
 
.main-image { 
    max-width: 95%; /* Responsive image */ 
}