/* button styles */
.btn {
  box-sizing: border-box;
  position: relative;
  display: inline-block;
  font-weight: 400;
  line-height: 1.5;
  color: #000;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  background-color: #e9ecef;
  border: 1px solid #e9ecef;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  border-radius: 4px;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out,
    border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.btn *,
.btn *::before,
.btn *::after {
  box-sizing: inherit;
}
.btn img,
.btn svg {
  display: inline-flex;
  vertical-align: -0.125em;
  width: 1em;
  height: 1em;
}
.btn:hover {
  text-decoration: none;
  background-color: #cbd3da;
}
.btn:focus {
  outline: none;
}
.btn.disabled,
.btn:disabled {
  opacity: 0.65;
  pointer-events: none;
}

.btn.primary {
  background-color: #007bff;
  border-color: #007bff;
  color: #fff;
}
.btn.primary:hover {
  text-decoration: none;
  background-color: #0062cc;
}

.btn.outline {
  background-color: transparent;
  border-color: #e9ecef;
}
.btn.outline:hover {
  text-decoration: none;
  background-color: #e9ecef;
}

.btn.link {
  background-color: transparent;
  color: #007bff;
  border-color: transparent;
}
.btn.link:hover {
  background-color: #e9ecef;
}

.btn.block {
  width: 100%;
  display: block;
}

.btn.small {
  padding: 0.1rem 0.4rem;
}

/* index.html */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body,
html {
  padding: 0;
  margin: 0;
}

body {
  padding: 0.5rem;
}

img {
  display: block;
  /* This rule is very important, please don't ignore this */
  max-width: 100%;
  max-height: 400px;
  width: 100%;
}

.previewAll {
  display: grid;
  grid-template-columns: 4fr 3fr 2fr 1fr;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.previewAll .preview {
  overflow: hidden;
}

/* file input */

.file-upload-box {
  position: relative;
}
.file-upload-box .hidden-input {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px 1px 1px 1px);
}
.file-upload-box input.hidden-input:focus + label {
  outline: thin dotted;
}
.file-upload-box input.hidden-input:focus-within + label {
  outline: thin dotted;
}
.file-upload-box .input-label {
  border: 1px solid #eee;
  width: 80px;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: lighter;
  color: #555;
}