article{
  h3 {
    position: relative;
    padding: .5rem 5rem;
    width: max-content;
    font-size: 2rem;
    letter-spacing: 0.1em;
    color: var(--main-color);
    display: block;
    text-align: center; 
    margin: 3rem auto;
    margin-inline: auto;
  }
  h3::before,
  h3::after {
    content:'';
    position: absolute;
    width: 30px;
    height: 30px;
  }
  h3::before {
    border-left: solid 1px var(--main-color);
    border-top: solid 1px var(--main-color);
    top:0;
    left: 0;
  }
  h3::after {
    border-right: solid 1px var(--main-color);
    border-bottom: solid 1px var(--main-color);
    bottom:0;
    right: 0;
  }
  h3 span:before,
  h3 span:after {
    content:'';
    position: absolute;
    width: 46px;
    height: 46px;
    rotate: 45deg;
  }
  h3 span:before {
    border-left: solid 1px var(--main-color);
    top:2px;
    left: 2px;
  }
  h3 span:after {
    border-right: solid 1px var(--main-color);
    bottom:2px;
    right: 2px;
  }
}

article{
  section{
    width: clamp(48rem, 90%, 68.75rem);
    margin: 0 auto;
  }
}
@media (max-width: 767px){
  article{
    section{
      width: 90%;
    }
  }
}

table{
  width: 100%;
  border-collapse: collapse;
  margin-top: 3rem;
  tr{
    border-bottom: 1px solid var(--text-color);
    th,td{
      padding: 1rem;
    }
  }
  tbody{
    tr:nth-of-type(even){
      background-color: #eee;
    }
  }
}
.green{
  color: green;
}
.red{
  color: red;
}
.blue{
  color: blue;
}