非主流留言板留言大全

```

CSS部分

```css

body {

fontfamily: Arial, sansserif;

backgroundcolor: f4f4f4;

margin: 0;

padding: 0;

display: flex;

flexdirection: column;

alignitems: center;

justifycontent: center;

height: 100vh;

}

h1 {

color: 333;

}

form {

display: flex;

flexdirection: column;

alignitems: center;

gap: 1rem;

marginbottom: 1rem;

}

textarea {

width: 300px;

resize: none;

}

messageBoard {

width: 100%;

maxwidth: 600px;

padding: 1rem;

boxsizing: borderbox;

backgroundcolor: fff;

border: 1px solid e0e0e0;

borderradius: 5px;

boxshadow: 0px 2px 4px rgba(0, 0, 0, 0.1);

marginbottom: 1rem;

}