/*
    note: 通用样式
    write: zx
*/

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    position: relative;
    font-size: 0.36rem;
}
p {
  margin-bottom: 0.2rem;
}

/* 需要区分 */
@media screen and (max-width: 960px){
  /* 手机端CSS代码 */
  body{
      width: 100%;
  }
  html{
      font-size: -webkit-calc(100vw / 25);
      font-size: -moz-calc(100vw / 25);
      font-size: calc(100vw / 25); 
      /* 375px的屏幕 1rem = 50px */
  }
}
 
@media screen and (min-width: 960px){
  /* 电脑端CSS代码 */
  body{
      width: 750px;
      margin: 0px auto;
  }
  html{
      font-size: 30px; 
  }
}

.mainpart_m {
    position: absolute;
    width: 100%;
    height: 100%;    
    text-align: center;
}
.bg_img {
  
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: -10;
  object-fit: cover;
}

.bg_top {
  width: 100%;
  position: relative;
}

.bg_bottom {
  width: 100%;
  margin-top: 0.2rem;
}

.btn_content {
  width: 20rem;
  margin: 0 auto;
  height: 5rem;
  box-sizing: border-box;
  position: relative;
  display: flex;   
}
.btn_content div{
  height: 100%;
  display: inline-block;
  flex: 1;
}
.btn_content div img {
  width: 100%;
}

.header {
    position: relative;
    /* top: 5%; */
    margin-top: 5%;
    max-height: 15%;
    min-height: 10%;
}

.header img {
    width: 80%;
}

.title_m {
    position: relative;
    /* top: 5%; */
    margin-top: 2%;
    max-height: 15%;
    min-height: 10%;
}

.title_m img {
    width: 90%;
}

.footer_m {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 12vw;
    background-color: #207329;
    text-align: center;
}

.footer_m span{
    line-height: 12vw;
    font-size: 1rem;
    color: #fffdde;
}