*{
    font-family: Arial;
}
.topic {
    box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.5);
    width: 200px;
  }

  body {
    background-color: rgba(233, 93, 12, 0.048);
    margin: 0 auto;
  }

  header {
    background-color: #ffa500;
    border-bottom: 1px solid #466995;
    display: block;
    position: fixed;
    width: 100%;  
    color: white;
    font-size: 5em;  
    z-index: 10;    
  }

  main {
    display: grid;
    grid-template-columns: repeat(3, 250px);
    grid-template-rows: repeat(3, 450px);
    grid-gap: 20px;       
    justify-items: center;
    justify-content: center;
    align-items: stretch;  
    align-content: center;
    grid-auto-rows: 500;
    grid-auto-flow: row;
    position: relative;
    top: 100px;
    padding: 40px;
  }

  h2 {    
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-align: left;
    color: #ffa500;
    padding: 10px 0px 10px 10px;
    text-transform: uppercase;
  }

  .topic img {
    width: 100%;
    height: auto;
    opacity: 1;
  }