html {
  color: #black;
/*  background: #7357d7;*/
/*  background:#191d1e;*/
}
body {
    background-color: #fff;
    color: #636b6f;
    font-family: 'Nunito', sans-serif;
    font-weight: 200;
    height: 100vh; 
    margin: 0;
    z-index: 1;
    position:relative;
}
.full-height {
    height: 100vh;
}
.flex-center {
    align-items: center;
/*                display: flex; */
    justify-content: center;
}
.position-ref {
    position: relative;
}
.top-right {
    position: absolute;
    right: 10px;
    top: 18px;
}
.content {
    text-align: center;
}
.title {
    font-size: 84px;
}
.links > a {
    color: #B7B7B7;
    padding: 0 25px;

    font-weight: 600;
    letter-spacing: .1rem;
    text-decoration: none;
    text-transform: uppercase;
}
.m-b-md {
    margin-bottom: 30px;
    color:#C2C2C2;
}
.head {
    color:#008080;
    font-size: 1.5em;
    font-weight: 600;
    letter-spacing: .1rem;
    text-decoration: none;
    text-transform: uppercase;
}
.card { 
/*    background-color: rgba(245, 245, 245, 0.4); */
/*    background-color: rgba(149, 149, 81, 0.1);  */
    background-color: rgba(92, 87, 70, 0.1); 
    color:#ddd;

}
.card-title {
    color:#cd0e4d;
    font-weight: 600;
}
@media screen and (max-width: 850px) {
  div.non_si_sup_750 {
    display: none;    
  }
  .large-header{
    height:180px;    
  }
  .head {    font-size: 1em;                }
  .m-b-md {   font-size: 2em;               }
  .links  {  font-size: 10px;               }
  p {    font-size: 1.5em;       }
}
@media screen and (min-width: 851px) {
  div.noexemple {
    display: none;
    }
    .large-header{ height:400px;     }
    .head {    font-size: 1.5em;     } 
    .links  {  font-size: 13px;               }
}          

canvas {

}