.opener{
  text-align: right;
  padding-right: 40px;
  padding-top: 10%;
  padding: 10%;
}

.opener a{
  text-decoration: underline;
}

.left_section{
  padding-left: 5%;
  text-align: left;
  width: 50%;
}

.left_section img{
  width: 100%;
}

.project img {
  width: 90%;
}

.project p{
  font-size: 16px;
}

.project h3{
  margin: 1.5% 0 -1.5%;
}

.project{
  margin-bottom: 7%;
}

  /* image hover */
  .image {
    opacity: 1;
    display: block;
    width: 100%;
    height: auto;
    transition: .5s ease;
    backface-visibility: hidden;
  }
  
  .project img:hover{
    opacity: 0.5;
  }

  .project a:hover{
    text-decoration: underline;
  }

  details {
    user-select: none;
    margin: 3%;
  }
  
  details>summary span.icon {
    width: 24px;
    height: 24px;
    transition: all 0.6s;
    margin-left: auto;
  }
  
  details[open] summary span.icon {
    transform: rotate(360deg);
  }
  
  summary {
    color: white;
    display: flex;
    cursor: pointer;
    font-size: 45px;
  }
  
  summary::-webkit-details-marker {
    display: none;
  }