    <style>
            html,
      body {
        position: relative;
        height: 100%;
      }

      body {
        background: #eee;
        font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
        font-size: 14px;
        color: #000;
        margin: 0;
        padding: 0;
      }


      .top_menu2{
        position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    /*display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;*/
    z-index: 9999;
      }
      .tabs{
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: relative;
    justify-content:center;
    align-items:center;
    height: 78px;
      }
      .tabs_item {
        flex:1;
    font-size: 18px;
    font-family: PingFangSC-Semibold,PingFang SC;
    font-weight: 600;
    position: relative;
    width: 180px;
    text-align: center;
    color: rgb(51, 51, 51);
}
a{
text-decoration:none;
color: rgb(51, 51, 51);
}
.active a{
  color: rgb(248, 0, 88);
  text-decoration:none;
}
a:hover{
  color: rgb(248, 0, 88);
  text-decoration: none;
}
.image{
  display: block;
  text-align: center;
  margin:0 auto;
  max-width:100%; 
  height:auto;
}
.mask{

      position: fixed;
    top: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,.5);
    z-index: 99999;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.maskbox{
      position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    width: 360px;
    background-color: #fff;
    border-radius: 10px;
    padding: 50px 0 50px;
}
.del{
  width: 40px;
    height: 40px;
    position: absolute;
    top: -20px;
    right: -20px;
    cursor: pointer;
}
.masktitle{
      font-size: 30px;
    font-family: PingFangSC-Semibold,PingFang SC;
    font-weight: 600;
    color: #000;
    line-height: 42px;
}
.masktips{
  font-size: 16px;
    color: #666;
    line-height: 22px;
    margin-top: 12px;
}
.maskimage{
  width: 195px;
    height: 248px;
    margin-top: 28px;
}
.slide-wrap {
            display: flex;
            justify-content: center;
            align-items: center; 
        }

        .slide-wrap img {
            object-fit: contain;
            width: 100%;
            height: 100%;
        }
.margintop{
  margin-top:78px;
}


body {
    margin: 0;
}

.clearfix {
    clear: both;
}

nav {
    font-family: Helvetica;
    text-align: right;
    text-transform: uppercase;  
    background-color: #222;
}

nav ul {
    width: 90%;
    max-width: 1024px;
    margin: 0 auto;
    list-style-type: none;
}

nav ul li {
    display: inline-block;
}

nav ul li a {
    color: #9d9d9d;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    padding: 1em;
    box-sizing: border-box;
}

nav ul li a:hover {
    color: white;
}

.current_page {
    background-color: black;
}

.current_page a {
    color: white;
}

#menu_button_wrapper{
    display: none;
}

.hidden {
    display: none;
}

/* Responsive for smaller screens */

@media (max-width: 760px) {
    #menu_button_wrapper{
        display: block;
        padding: 1em;
        color: #9d9d9d;
        border-bottom: 1px solid #101010;
        -webkit-box-shadow: 0 1px 0 rgba(255,255,255,.1);
        box-shadow: 0 1px 0 rgba(255,255,255,.1);
    }
    
    #menu_button {
        box-sizing: border-box;
        float: right;
        padding: .5em 1em;
        border: 1px solid #333;
        border-radius: 5px;
        color: white;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    #menu_button:hover {
        cursor: pointer;
        background-color: #333;
    }
    
    #hamburger {
        float: right;
        padding-top: .15em;
    }
    
    #menu_button span{
        display: block;
        background-color: #fff;
        width: 1.2em;
        height: .15em;
        border-radius: 1px;
        margin-bottom: .2em;
    }
    
    nav ul {
        width: 100%;
        margin: 0 auto;
        padding: 0;
        box-sizing: border-box;
    }

    nav ul li {
        display: block;
    }
    
    nav ul li a {
        width: 100%;
    }

}

    </style>