:root{
  --bg: #0b1020;
  --text: #e9ecf1;
}

*{ box-sizing: border-box; }
html, body{ margin:0; padding:0; }
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1000px 500px at 20% 0%, rgba(110,168,254,.25), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height: 1.5;
}

  
table{
  width: 60%; 
  margin: auto;
}

.image-bloc{
  text-align:center;
  width:300px;
  margin:left;
}

.image-bloc img{
  width:100%;
}