.file_block {
  margin: 0 auto;
  border: 1px lightgray solid;
  width: 300px;
  height: 450px;
}

.file_block picture img {
  padding: 10px;
  margin: 10px auto 10px auto;
  width: calc(300px - 10%);
  height: auto;
  align-items: center;
  display: flex;
}

.column-33 {
  margin: 30px 0;
}

.container .column-80 {
  margin: 0 -15px 0 -15px;
  padding: 0;
}

.column-80 .row {
  display: flex;
  justify-content: flex-start !important;
  flex-flow: row wrap;
}

.file_name,
.file_size {
  text-align: center;
  font-size: calc(1em - 10%);
}

.file_size {
  margin: 5px 0 15px 0;
  color: gray;
}

picture {
  cursor: pointer;
}

@media screen and (max-width: 1500px) {

  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 250px;
    height: 400px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(250px - 10%);
    height: calc(350px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 30px 0;
  }

}

@media screen and (max-width: 1200px) {
  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 240px;
    height: 350px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(240px - 10%);
    height: calc(300px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 15px 0;
  }
}

@media screen and (max-width: 900px) {
  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 200px;
    height: 300px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(200px - 10%);
    height: calc(250px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 15px 0;
  }

  .file_name,
  .file_size {
    text-align: center;
    font-size: calc(1em - 20%);
  }
}

@media screen and (max-width: 750px) {

  .column-33 {
    width: 50% !important;
  }

  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 250px;
    height: 300px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(200px - 10%);
    height: calc(250px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 10px 0;
    padding: 0;
  }

  .file_name,
  .file_size {
    text-align: center;
    font-size: calc(1em - 20%);
  }
}

@media screen and (max-width: 550px) {

  .column-33 {
    width: 50% !important;
  }

  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 200px;
    height: 300px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(200px - 10%);
    height: calc(250px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 10px 0;
    padding: 0;
  }

  .file_name,
  .file_size {
    text-align: center;
    font-size: calc(1em - 20%);
  }
}

@media screen and (max-width: 450px) {

  .column-33 {
    width: 50% !important;
  }

  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 150px;
    height: 200px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(150px - 10%);
    height: calc(150px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 8px 0;
    padding: 0;
  }

  .file_name,
  .file_size {
    text-align: center;
    font-size: calc(1em - 20%);
  }
}

@media screen and (max-width: 350px) {

  .column-33 {
    width: 100% !important;
  }

  .file_block {
    margin: 0 auto;
    border: 1px lightgray solid;
    width: 150px;
    height: 200px;
  }

  .file_block picture img {
    padding: 10px;
    margin: 10px auto 10px auto;
    width: calc(150px - 10%);
    height: calc(150px - 10%);
    align-items: center;
    display: flex;
  }

  .column-33 {
    margin: 5px 0;
    padding: 0;
  }

  .file_name,
  .file_size {
    text-align: center;
    font-size: calc(1em - 20%);
  }
}