@charset "utf-8";

body,
p,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
ol,
dl,
dd {
  padding: 0;
  margin: 0;
}

img {
  vertical-align: top;
  border: 0;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
  color: #000;
}

a:hover {
  color: red;
}

.cl:after {
  content: "";
  display: block;
  clear: both;
  height: 0;
  overflow: hidden;
  visibility: hidden;
}

.cl {
  zoom: 1;
}

html {
  font-size: 16px;
}

@media screen and (min-width: 375px) {
  html {
    /* iPhone6的375px尺寸作为16px基准，414px正好18px大小, 600 20px */
    font-size: calc(100% + 2 * (100vw - 375px) / 39);
    font-size: calc(16px + 2 * (100vw - 375px) / 39);
  }
}

@media screen and (min-width: 414px) {
  html {
    /* 414px-1000px每100像素宽字体增加1px(18px-22px) */
    font-size: calc(112.5% + 4 * (100vw - 414px) / 586);
    font-size: calc(18px + 4 * (100vw - 414px) / 586);
  }
}

@media screen and (min-width: 600px) {
  html {
    /* 600px-1000px每100像素宽字体增加1px(20px-24px) */
    font-size: calc(125% + 4 * (100vw - 600px) / 400);
    font-size: calc(20px + 4 * (100vw - 600px) / 400);
  }
}

@media screen and (min-width: 1000px) {
  html {
    /* 1000px往后是每100像素0.5px增加 */
    font-size: calc(137.5% + 6 * (100vw - 1000px) / 1000);
    font-size: calc(22px + 6 * (100vw - 1000px) / 1000);
  }
}