html,body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: Oswald;
  /* font-family: 'Microsoft YaHei'; */
}
a {
  text-decoration: none;
  color:#fff;
}
.bold {
  font-weight: normal;
}
.space {
  letter-spacing: 10px;
}
.wrap {
  background: url(../img/bg.jpg) center / cover no-repeat;
  width: 100%;
  height: 100%;
  color:#fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  width: 100%;
}
.wrap .title {
  font-family: 'Bahnschrift', 'Playfair Display', 'mongolian baiti', 'microsoft himalaya';
  font-size: 60px;
  padding: 0 0 20px;
}
.select-box {
  margin-top: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.select {
  /* outline: none; */
  width: 680px;
  height: 50px;
  font-size: 20px;
  color: #fff;
  padding: 0 10px;
  /*Chrome和Firefox里面的边框是不一样的，所以复写了一下*/
  border: solid 1px #fff;
  /*很关键：将默认的select选择框样式清除*/
  appearance:none;
  -moz-appearance:none;
  -webkit-appearance:none;
  /*在选择框的最右侧中间显示小箭头图片*/
  background: url("../img/arrow.png") no-repeat transparent;
  background-size: 14px 14px;
  background-position: calc(100% - 10px) 50%;
  /*为下拉小箭头留出一点位置，避免被文字覆盖*/
  padding-right: 24px;
}
.select:active {
  color:#000;
  outline-color: #000;
}
.select-btn {
  background-color: #373737;
  color: #fff;
  font-size: 20px;
  padding: 0 70px;
  line-height: 50px;
  margin-left: 10px;
  border-radius: 25px;
  cursor: pointer;
}
.select-btn:hover {
  opacity: 0.7;
}
.footer {
  margin-top:100px;
  line-height: 1;
  font-size: 16px;
  display: flex;
  text-align: left;
  width: 910px;
}

.footer .slogan {
  width: 144px;
  margin: 0 30px 0 0;
  display: block;
}
.footer .right .strong {
  font-weight: bold;
  display: block;
  padding-bottom: 4px;
}
.link {
  /* text-decoration: underline; */
}
.footer .link:hover, .bottom .link:active {
  font-weight: normal;
  text-decoration: underline;
}
.footer .socialmedia {
  width: 18px; /* 设置常规情况下图片的大小 */
  /* margin: 0 30px 0 0; */  /*自行调整*/
  /* display: block; */ /* 弹性布局下，块级元素的特性会被忽略，没必要写 */
}

@media screen and (max-width:990px) {
  .select {
    width: 500px;
  }
  .footer {
    width: 730px;
  }
  .footer .slogan {
    width: 120px;
    margin: 0 10px 0 0;
  }
  .footer .socialmedia {
    width: 18px; /* 设置此设备宽度下socialmedia的宽高样式,自行调整 */
  }
  .footer .text {
    font-size: 12px;
  }
}
@media screen and (max-width: 767px) {
  .block {
    display: block;
  }
  .space {
    letter-spacing: 1px;
  }
  .wrap {
    /* 替换成移动端背景 */
    background: url(../img/bg-mobile.jpg) center / cover no-repeat;
  }
  .wrap .title{
    font-size: 24px;
  }
  .select-box {
    flex-direction: column;
  }
  .select {
    width: 300px;
    font-size: 14px;
    height: 40px;
  }
  .select-btn {
    margin-top: 16px;
    margin-left: 0;
    width: 300px;
    box-sizing: border-box;
    line-height: 40px;
    font-size: 16px;
    box-sizing: border-box;
  }
  .footer {
    font-size: 12px;
    width: auto;
    flex-direction: column;
    text-align: center;
    line-height: 2;
  }
  .footer .slogan {
    width: 120px;
    margin: 0 auto 8px;
  }
  .footer .socialmedia {
    width: 18px; /* 设置此设备宽度下socialmedia的宽高样式,自行调整 */
  }
  .footer .text {
    display: block;
    font-size: inherit;
  }
  .footer .text.strong {
    display:inline-block;
    position: relative;
    padding: 8px 0;
  }
  .footer .text.strong::before {
    position: absolute;
    content: '';
    left: -94px;
    bottom:20px;
    border-bottom: 1px solid #fff;
    width: 90px;
  }
  .footer .text.strong::after {
    position: absolute;
    content: '';
    right: -94px;
    bottom:20px;
    border-bottom: 1px solid #fff;
    width: 90px;
  }
  .hidden-xs-only {
    display: none;
  }
}
@media screen and (min-width:768px) {
  .hidden-sm-and-up {
    display: none;
  }
}