* {
  padding: 0;
  margin: 0;
  font-style: normal;
  font-weight: normal;
}
.flex {
  display: flex;
}
.flex_center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex_sw {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
button {
  border: none;
}
.header {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 80px;
  background: #FFFFFF;
  box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.06);
  z-index: 99;
}
.header .inner {
  width: 1348px;
  margin: auto;
  box-sizing: border-box;
  padding: 0 74px;
}
.header .inner .logo {
  display: block;
  width: 192px;
  height: 75px;
  background: url(../img/logo.png) no-repeat;
  background-size: 100% auto;
}