index.css

* {
    margin: 0;
    padding: 0;
    align-items: baseline;

}
*:first-child {
  margin-top: 0 !important;
}
*:last-child {
  margin-bottom: 0 !important;
}
body{
    max-width: 70em;
    margin: auto;
    text-align: justify;
}
.line {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
}

.imageInside {
 align-self: stretch;
}
.bloc {
 /* flex: 1 100%;*/
    flex: 1 ;
    padding:20px;
    width:100%;
}

.markdown-body{
    margin: 2em;

}

.img_normal {
    max-width: 100%;
}
img {
    width:100%;
    object-fit: cover;

}

p{
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

@media all and (min-width: 1000px) {
    .B0 {
      display: none;
    }
    .B1 {
      flex: 1 ;
    }
    .B2 {
      flex: 2 ;
    }
    .B3 {
      flex: 3 ;
    }
    .B4 {
      flex: 4 ;
    }
    .B5 {
      flex: 5 ;
    }
    .B6 {
      flex: 6 ;
    }
    .B7 {
      flex: 7 ;
    }
    .B8 {
      flex: 8 ;
    }
    .B9 {
      flex: 1 100%;
    }
    .B9 > h1,.B9 > h2,.B9 > h3,.B9 > h4,.B9 > h5 {
        text-align: center!important;
    }
}

@media all and (min-width: 800px) and (max-width: 1000px) {
    .M0 {
      display: none;
    }
    .M1 {
      flex: 1 ;
    }
    .M2 {
      flex: 2 ;
    }
    .M3 {
      flex: 3 ;
    }
    .M4 {
      flex: 4 ;
    }
    .M5 {
      flex: 5 ;
    }
    .M6 {
      flex: 6 ;
    }
    .M7 {
      flex: 7 ;
    }
    .M8 {
      flex: 8 ;
    }
    .M9 {
      flex: 1 100%;
    }
    .M9 >h1,.M9 >h2,.M9 >h3,.M9 >h4,.M9 >h5 {
        text-align: center!important;
    }
}

@media all and (max-width: 800px) {
    .S0 {
      display: none;
    }
    .S1 {
      flex: 1 ;
    }
    .S2 {
      flex: 2 ;
    }
    .S3 {
      flex: 3 ;
    }
    .S4 {
      flex: 4 ;
    }
    .S5 {
      flex: 5 ;
    }
    .S6 {
      flex: 6 ;
    }
    .S7 {
      flex: 7 ;
    }
    .S8 {
      flex: 8 ;
    }
    .S9 {
        flex: 1 100%;
    }
    .S9 > h1,.S9 > h2,.S9 > h3,.S9 > h4,.S9 > h5 {
        text-align: center!important;
    }
}



/*///////////////USER CENTRIX ZONE/////////////*/


/*LINKS*/
a {
  color: #888;
  text-decoration: none;
}
a:active,
a:hover {
  color: #333;
  outline-width: 0;
  text-decoration: underline;
}




/*TYPOGRAPHY*/
p {
  margin-top: 0;
  margin-bottom: 10px;
}
 hr {
  border-bottom-color: #eee;
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background-color: #e7e7e7;
  border: 0;
}
strong {
  font-weight: bolder;
}
em {
  font-style: italic;
}
body{
    color: #333;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    font-size: 16px;
    line-height: 1.4;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 24px;
  margin-bottom: 16px;
  line-height: 1.5;
}
h6 {
  color: #777;
}

/*LISTS*/
li>p {
  margin-top: 16px;
}
li+li {
  margin-top: 0.25em;
}
ul,ol{
  margin-top: 0;
  margin-bottom: 0;
  padding-left: 2em;

}

/*QUOTE*/
blockquote {
  margin: 0;
  margin-top: 0;
  margin-bottom: 16px;
  padding: 0 1em;
  color: #777;
  border-left: 0.25em solid #ddd;
}
blockquote>:first-child {
  margin-top: 0;
}
blockquote>:last-child {
  margin-bottom: 0;
}

/*TABLE*/
table {

  border-spacing: 0;
  border-collapse: collapse;
  margin-top: 0;
  margin-bottom: 16px;
  width: 100%;
  overflow: auto;
}
table th {
  font-weight: bold;
}
table th,
table td {
  padding: 6px 13px;
  border: 1px solid #ddd;
}
table tr {
  background-color: #fff;
  border-top: 1px solid #ccc;
}
table tr:nth-child(2n) {
  background-color: #f8f8f8;
}

/*CODE*/
code {
  font-family: monospace, monospace;
  font-size: 1em;
  padding: 0;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(0,0,0,0.04);
  border-radius: 3px;
}


.editor{
    height:300px;
}