```html
body {
fontfamily: Arial, sansserif;
lineheight: 1.6;
margin: 0;
padding: 20px;
}
h1 {
textalign: center;
}
.imagegrid {
display: grid;
gridtemplatecolumns: repeat(autofit, minmax(300px, 1fr));
gap: 20px;
justifyitems: center;
margintop: 20px;
}
.imagegrid img {
maxwidth: 100%;
height: auto;
}
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