.main_area {
  margin-right: auto;
  margin-left: auto;
  width: 600px;
  flex-direction: column;
  display: flex;
  margin-top: 50px;
}

.linkert {
  flex-direction: column;
  margin-top: 50px;
}

.linkert__checkboxes {
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-evenly;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.linkert__checkbox {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.linkert__header {
  margin: 0 0 1rem 0;
  font-size: 1.8rem;
  font-family: Lato, Arial, sans-serif;
  color: var(--black);
}
.linkert__subheader {
  margin: 0 0 1rem 0;
  font-size: 1.2rem;
  font-family: Lato, Arial, sans-serif;
  color: var(--black);
}

.fileName {
  margin-top: 2rem;
  font-size: 1.2rem;
  font-family: Lato, Arial, sans-serif;
  color: var(--black);
}

.linkert__checkbox__header,
.linkert__checkbox__subheader {
  margin: 0 0 1rem 0;
  font-size: 1rem;
  font-family: Lato, Arial, sans-serif;
  color: var(--black);
  max-width: 70px;
}

.linkert__checkbox__subheader {
  font-size: 1.3rem !important;
}

@media (max-width: 640px) {
  .linkert__checkbox__header {
    font-size: 1.4rem;
    line-height: 1.7rem;
  }
  .linkert__checkbox__header {
    display: table;
    max-width: 7rem;
    min-width: 6rem;
    min-height: 5rem;
    text-align: center;
  }
  .linkert__checkbox__header.--wide {
    font-size: 1.6rem;
    min-height: 4rem;
  }
  .linkert__checkbox__header span {
    display: table-cell;
    vertical-align: middle;
  }
}

.check-box-square {
  height: 2.35rem;
  width: 2rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 0.5rem;
  padding: 0;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  text-align: left;
}

/* Hide the browser's default checkbox */

.check-box-square input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

/* Create a custom checkbox */

.check-box-square .checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 22.27px;
  width: 21.95px;
  background-color: #eee;
  border: solid 2px #000000;
  border-radius: unset;
}

/* On mouse-over, add a grey background color */

.check-box-square:active input ~ .checkmark {
  background-color: #ccc;
}

/* When the checkbox is checked, add a blue background */

.check-box-square input:checked ~ .checkmark {
  background-color: var(--white);
}

/* Create the checkmark/indicator (hidden when not checked) */

.check-box-square .checkmark:after {
  content: '';
  position: absolute;
  display: none;
}

/* Show the checkmark when checked */

.check-box-square input:checked ~ .checkmark:after {
  display: block;
}

/* Style the checkmark/indicator */

.check-box-square .checkmark:after {
  left: 4.2px;
  top: 0px;
  width: 9px;
  height: 14px;
  border: solid #000000;
  border-width: 0 3px 3px 0;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}

.startButton {
  background-color: #c4df9b;
  padding: 15px 32px;
}

.resetButton {
  background-color: #f26d7d;
  padding: 15px 32px;
}

.downloadButton {
  background-color: #94defa;
  padding: 15px 32px;
}

.fileNameBox {
  padding: 10px 15px;
}

button {
  box-shadow: 5 5 5 5 black;
  margin-top: 20px;
  font-size: 1rem;
}

input {
  margin-top: 20px;
}