header {
    background-color: rgba(0,0,0,.8);
    padding:10px 20px;
    color:#fff;
}
body{
    font-family: sans-serif; 
    transition: background-color 500ms linear;
    margin:0px;


    background-image: 
    url(/imgs/overlay.svg),
    url(/imgs/bg_burst_dark_black.svg); 
background-repeat: 
    no=repeat,
    no-repeat; 
background-size: 
    cover,
    cover;
background-position:
    center,
    center;
background-attachment: 
    fixed,
    fixed;
  }
#main {
    max-width:800px; margin:auto;
     text-align: center;
    }
.box_chunk{
    background-color:rgba(0,0,0,.5);
    border-radius:10px;
    padding:20px;
    margin-top:50px;
    color:#fff;
    border:5px solid rgba(255,255,255,.3)
}
.box_chunk_bg{
    background-color: ;
    transition: background-color 500ms linear;
    border-radius:10px;
    box-shadow: 0px 5px 15px rgba(0,0,0,.4);
}
.box{
    margin-left:40px;
    margin-right:40px;
    border-radius:10px;
    
}
input{
    padding:10px 20px; 
    border-radius:5px;
    border:1px solid #777777;
    text-align: center;
}
textarea{
    padding:10px;
    width:300px;
    height:60px;
    border-radius:5px;
}