```html
body {
fontfamily: Arial, sansserif;
margin: 0;
padding: 20px;
}
.container {
maxwidth: 800px;
margin: 0 auto;
textalign: center;
}
h1 {
color: 333;
}
img {
maxwidth: 100%;
height: auto;
margintop: 20px;
boxshadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
考研百日冲刺标语