body {
    font-family: Arial;
    background:#eef2f5;
    padding:20px;
}
.container {
    max-width:900px;
    margin:auto;
    background:#fff;
    padding:20px;
    border-radius:10px;
    box-shadow:0 2px 8px rgba(0,0,0,0.1);
}
.controls {
    margin-bottom:20px;
}
input, select {
    padding:10px;
    margin-right:10px;
}
button {
    padding:10px 15px;
}
.tweet {
    border-bottom:1px solid #ddd;
    padding:10px 0;
}
.stats {
    margin-bottom:15px;
    font-weight:bold;
}