body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
textarea,
p,
blockquote,
th,
td,
hr,
button,
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  margin: 0;
  padding: 0;
}
/* em和i是斜体，斜体文字不倾斜 */
em,
i {
  font-style: normal;
}
/* 去掉li的小圆点 */
li {
  list-style: none;
}

img {
  /* 照顾低版本浏览器如果图片外面包含了链接会有边框的问题 */
  border: 0;
  /* 取消图片底侧空白缝隙问题 */
  vertical-align: middle;
}
/* 当我们鼠标经过按钮鼠标编程小手 */
button {
  cursor: pointer;
}

a {
  color: #333;
  text-decoration: none;
}
/* 按钮字体的指定 */
button,
input {
  font-family:
    Microsoft YaHei,
    Heiti SC,
    tahoma,
    arial,
    Hiragino Sans GB,
    '\5B8B\4F53',
    sans-serif;
}

body {
  /* 抗锯齿形，让文字显示的更加清晰 */
  -webkit-font-smoothing: antialiased;
  background-color: #fff;
  font:
    18px Microsoft YaHei,
    Heiti SC,
    tahoma,
    arial,
    Hiragino Sans GB,
    '\5B8B\4F53',
    sans-serif;
  color: #333;
  font-weight: 500;
}

.hide,
.none {
  display: none;
}
/* 伪元素清除浮动 */
.clearfix:after {
  visibility: hidden;
  clear: both;
  display: block;
  content: '.';
  height: 0;
}

.flex-c {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-c-b {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layout-w {
  max-width: 1200px;
}
.layout-head-w {
  max-width: 1300px;
}