* {
  margin: 0;
  padding: 0;
  letter-spacing: 1px;
}

body {
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

html {
  font-size: 16px;
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", Tahoma, Arial,
    sans-serif;
}

a,
a:hover,
a:active,
a:visited,
a:link,
a:focus {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-tap-highlight-color: transparent;
  outline: none;
  background: none;
  text-decoration: none;
}

ul,
li {
  list-style: none;
}

iframe {
  border: none;
  width: 100%;
  overflow: hidden;
}

.fl {
  float: left;
}

.fr {
  float: right;
}

.clearfix,
.clearfix::after {
  display: block;
  content: "";
  clear: both;
}

.hide {
  display: none !important;
}

button,
.btn {
  display: inline-block;
  white-space: nowrap;
  cursor: pointer;
  background: transparent;
  border: none;
  color: #606266;
  -webkit-appearance: none;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  margin: 0;
  transition: all 0.1s;
  font-weight: 500;
  padding: 0 20px;
  font-size: 16px;
  height: 40px;
  border-radius: 4px;
  letter-spacing: 1px;
  vertical-align: middle;
}

/* button input 禁用颜色 */
button[disabled],
input[disabled] {
  opacity: 0.65;
}

.body-loading {
}

input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
  /* WebKit browsers */
  color: #ddd;
}

input:-moz-placeholder,
textarea:-moz-placeholder {
  /* Mozilla Firefox 4 to 18 */
  color: #ddd;
}

input::-moz-placeholder,
textarea::-moz-placeholder {
  /* Mozilla Firefox 19+ */
  color: #ddd;
}

input:-ms-input-placeholder,
textarea:-ms-input-placeholder {
  /* Internet Explorer 10+ */
  color: #ddd;
}