.prj_container {
  margin-top: 40px;
  margin-bottom: 40px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-column-gap: min(100px, 4vw);
  grid-row-gap: min(30px, 4vw);
}

.prj_container_single {
  margin-top: 40px;
  display: block;
  /* Case: padding-left for center image as in three images in a grid:    */
  /*                           1 image                + 1 space           */
  /*                 (all -      2 * 1fr        ) / 3 + 1fr               */
  padding-left: calc((100% - 2 * min(100px, 4vw)) / 3 + min(100px, 4vw) );
  padding-right: calc((100% - 2 * min(100px, 4vw)) / 3 + min(100px, 4vw) );
}

.prj_item {
  background-color: #fff;
  color: #000;
  padding-top: 150%;
  height: 0;
  overflow: hidden;
  border: 2px solid #333333;
  position: relative;
}

.prj_item > img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 64%;
  padding: 0;
  object-fit: cover;
  cursor: pointer;
}

.prj_item.prj_nolink > img {
  height: 100%;
  cursor: auto;
}

.prj_item > a {
  position: absolute;
  bottom: 0;
  left: 0;
  margin: 0 35% 10% 35%; /*top right bottom left*/
  padding: 2px 0 2px 0;
  width: 30%;
  vertical-align: middle;
  border: 2px solid #333333;
  text-decoration: none;
  font-size: 15px;
  font-weight: lighter;
}

.prj_item > h1 {
  position: absolute;
  top: 0;
  left: 0;
  margin: 112% 5% 10% 5%; /*top right bottom left*/
  transform: translate(0px, -50%);
  width: 90%;
  vertical-align: middle;
  text-decoration: none;
  font-size: 20px;
  font-weight: lighter;
}

@media only screen and (max-width: 1070px) {
  #footer_legal {
    padding-right: 80px; 
  }
  
  .prj_item > h1 {
    font-size: max(1.9vw, 1em);
  }
  
  .prj_item > a {
    font-size: 1.6vw;
  }
}

@media only screen and (max-width: 600px) {
  .prj_container {
    grid-template-columns: 1fr 1fr;
  }
  .prj_container_single {
    padding-left: 27.5%;
    padding-right: 27.5%;
    
    padding-left: calc((100% - min(100px, 4vw)) / 2 / 2 + min(100px, 4vw) / 2 );
    padding-right: calc((100% - min(100px, 4vw)) / 2 / 2 + min(100px, 4vw) / 2 );
  }
  
  .prj_item.center_when_two_columns {
    transform: translate(calc(50% + min(100px, 4vw) / 2),0px);
  }
  
  .contentblock > h1 {
    font-size: 180%;
  }
  
  .prj_item > h1 {
    font-size: min(4vw, 1.1em);
  }
  
  .prj_item > a {
    font-size: 3.2vw;
  }
  
}

@media only screen and (max-width: 350px) {
  .prj_container {
    grid-template-columns: 1fr;
  }
  .prj_container_single {
    padding-left: 0;
    padding-right: 0;
  }
  
  .contentblock > h1 {
    font-size: 130%;
  }
  
  .prj_item.center_when_two_columns {
    transform: none;
  }
  
  .prj_item > h1 {
    font-size: min(8vw, 1.1em);
  }
  
  .prj_item > a {
    font-size: 6.4vw;
  }
}