* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body{margin:0;background:#f5f8fa;scrollbar-width:thin;}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
}

button:focus {
  outline: 0;
}

a,
a:hover,
a:link {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-family: "roboto", "arial", "helvetica", "sans-serif", "pingfang tc", "pingfang sc", "Microsoft Yahei";
  font-size: 16px;
  line-height: 1.7;
}

.main{    
  max-width: 500px;
  margin: 0 auto;
  padding-bottom:80px;
  background:rgba(10, 10, 10, 1);
}

.main .content img{
  width:100%;
  display: block;
}

.cs-btn{
  position:fixed;
  width:66px;
  top: 180px;
  right: max(50vw - 250Px + .133333rem, .133333rem);
}

.cs-btn img{
  width:100%;
}

.footer{
  position:fixed;
  bottom:0;
  background-color: rgba(0, 0, 0, 0.8);
  width:100%;
  max-width:500px;
  height:80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer .btn-wrap{
  display:flex;
  align-items:center;
  justify-content:center;
}
.footer .btn-wrap .footer-btn{
  height:45px;
  color:white;
  width:220px;
  text-align:center;
  line-height:45px;
  font-size:17px;
  border-radius:10px;
  margin:0 12px;
  position:relative;
}
.footer .btn-wrap .footer-btn span{
  position: absolute;
  bottom: 110%;
  padding: 8px 12px;
  background-color: #ea4e3d;
  border-radius: 10px 10px 10px 0;
  font-size: 16px;
  color: white;
  display:block;
  line-height:1;
  left:50%;
  transform:translateX(-50%);
  white-space: nowrap;
}
.footer .btn-wrap .footer-btn span:before{
  content:"";
  border:16px solid transparent;
  border-left:16px solid #ea4e3d;
  display: block;
  width: 0;
  height: 0;
  position:absolute;
  left:0;
  bottom:-9px;
}

.footer .btn-wrap .footer-btn.left{
  background-color: rgb(0, 184, 212);
}

.footer .btn-wrap .footer-btn.right{
  background-color: rgb(255, 170, 9);
}

#linkModal .modal-content{
  border-radius:10px;
  border:1px solid white;
  background-color: rgb(15, 15, 15);
  padding:12px;
}

@media screen and (max-width: 1600px) {
}

@media screen and (max-width: 768px) {
}

@media screen and (max-width: 600px) {
}

@media screen and (max-width: 480px) {
  .cs-btn{
    width:50px;
  }
  .footer .btn-wrap{
    width:100%;
  }
  .footer .btn-wrap .footer-btn{
    width:100%;
    font-size:14px;
    height:38px;
    line-height:38px;
  }
  .footer .btn-wrap .footer-btn span{
    font-size:12px;
    border-radius: 8px 8px 8px 0;
  }
}

@media screen and (max-width: 360px) {
  .footer .btn-wrap .footer-btn{
    margin:0px 8px;
  }
  .footer .btn-wrap .footer-btn span{
    font-size:11px;
  }
}