body {
  font-family: Arial, sans-serif;
  background-color: #f5f8fa;
  color: #14171a;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

h1 {
  color: #1da1f2;
  text-align: center;
}

.search-section {
  display: flex;
  gap: 10px;
  margin: 20px 0;
}

#usernameInput {
  flex: 1;
  padding: 10px;
  border: 1px solid #e1e8ed;
  border-radius: 4px;
}

#searchBtn {
  padding: 10px 20px;
  background-color: #1da1f2;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#searchBtn:hover {
  background-color: #1991db;
}

.help-card {
  background-color: white;
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.timeline-container {
  margin-top: 30px;
}

.tweet-card {
  background-color: #e8f4fd;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  border: 1px solid #cce7ff;
}

.tweet-card img {
  max-width: 100%;
  border-radius: 8px;
  margin-top: 10px;
}

.tweet-date {
  color: #657786;
  font-size: 0.9em;
  margin-bottom: 10px;
}

.tweet-text {
  line-height: 1.5;
}

@media (max-width: 600px) {
  .search-section {
    flex-direction: column;
  }
  
  #searchBtn {
    width: 100%;
  }
}