body {font-family: Arial, sans-serif; margin: 20px; background:#f5f5f5;}
header {text-align:center; margin-bottom:20px;}
.form {background:#fff; padding:10px; border-radius:8px; margin-bottom:20px;}
.form input, .form textarea {width:100%; margin:5px 0; padding:8px;}
button {padding:8px 12px; margin-top:5px; cursor:pointer;}
.post {background:#fff; padding:10px; border-radius:8px; margin-bottom:10px;}
.post h2 {margin-bottom:5px;}
.actions button {margin-right:5px;}