.guize_html {
    position: fixed;
    top: 30%;
    left: 50%;
    margin-top: -80px;
    margin-left: -159px;
    width: 318px;
    height: auto;
    border-radius: 4px;
   
    color: #000;
    text-align: center;
    font-size: 12px;
    box-shadow: 0 3px 6px #999999;
    border: solid 5px rgba(255,255,255,.2);
}
.guize_htmla {
    width: 308px;
    height: auto;
    border-radius: 4px;
    background-color: #f5f5f5;
    padding-bottom: 5px;
}
    .guize_html p {
        padding: 0 10px;
        text-align: left;
        text-indent: 2em;
        color: black;
    }
.guize_html_nei {
    width: 308px;
    min-height: 200px;
    overflow-y: auto;
    max-height: 500px;
    height: 200px;
    display: block;
    overflow-y: scroll;
    padding: 0px 10px;
}
.btn {
    display: block;
    margin: 10px auto;
    width: 90px;
    height: 32px;
    border-radius: 4px;
    background-color: #fc0;
    color: #000;
    text-align: center;
    line-height: 32px;
    cursor: pointer;
    font-size: 0.9375rem;
}        
 .overfloat {           
      position: fixed;            
      top: 0;            
      left: 0;            
      z-index: 9;            
      display: none;            
      width: 100%;            
      height: 100%;            
      /*background-color: rgba(1,1,1,.5);*/        

 }
#sgg video, img {
    width:100%;
}