* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif, 思源黑体;
}

h1 {
  text-align: center;
  padding: 50px 0;
  font-weight: bold;
  font-size:14px;line-height:28px;height:56px;
}

.container {
  display: flex;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  justify-content: flex-start; /* 左对齐 */
}

.block {
  width: calc(33.33% - 20px); /* 每个图块宽度，减去边距 */
  margin: 10px;
  text-align: center;
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 10px;
}

.block img {
  width: 100%;
  height: auto;
  margin-bottom: 10px;
}

h3 {
  margin-bottom: 10px;
  font-weight: bold;
  font-size:18px;line-height:28px;
}

p {
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #f4f4f4;
  color: #333;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: #e0e0e0;
}

.btnyellow {
  display: inline-block;
  padding: 10px 20px;
  background-color: #EAD89F;
  color: #333;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.css-line {
  border-bottom: 1px solid #000;
  margin: 20px 0;
  border-color:#EDEDED;
}

/* 手机端媒体查询 */
@media (max-width: 768px) {
 .block {
    width: 100%;
  }
}