/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 清除常见元素的默认样式 */
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, th, td {
  margin: 0;
  padding: 0;
}

/* 清除列表样式 */
ol, ul {
  list-style: none;
}

/* 清除图片边框与底部间隙 */
img {
  border: none;
  vertical-align: middle;
}

/* 清除链接默认样式 */
a {
  color: inherit;
  text-decoration: none;
}

/* 清除标题字体大小与粗细 */
h1, h2, h3, h4, h5, h6 {
  font-size: 100%;
  font-weight: normal;
}

/* 清除表格边框 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* 清除输入框和按钮的默认外观 */
input, button, textarea, select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
  background: none;
}

/* 清除浮动 */
.clearfix::after {
  content: "";
  display: block;
  clear: both;
  visibility: hidden;
  height: 0;
}