ttyd/html/src/components/modal/modal.scss

.modal {
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  align-items: center;
  display: flex;
  overflow: hidden;
  position: fixed;
  z-index: 40;
}

.modal-background {
  bottom: 0;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  background-color: #4a4a4acc;
}

.modal-content {
  margin: 0 20px;
  max-height: calc(100vh - 160px);
  overflow: auto;
  position: relative;
  width: 100%;

  .box {
    background-color: #fff;
    color: #4a4a4a;
    display: block;
    padding: 1.25rem;
  }

  header {
    font-weight: bold;
    text-align: center;
    padding-bottom: 10px;
    margin-bottom: 10px;
    border-bottom: 1px solid #ddd;
  }

  .file-input {
    height: .01em;
    left: 0;
    outline: none;
    position: absolute;
    top: 0;
    width: .01em;
  }

  .file-cta {
    cursor: pointer;
    background-color: #f5f5f5;
    color: #6200ee;
    outline: none;
    align-items: center;
    box-shadow: none;
    display: inline-flex;
    height: 2.25em;
    justify-content: flex-start;
    line-height: 1.5;
    position: relative;
    vertical-align: top;
    border-color: #dbdbdb;
    border-radius: 3px;
    font-size: 1em;
    font-weight: 500;
    padding: calc(.375em - 1px) 1em;
    white-space: nowrap;
  }
}

@media print, screen and (min-width: 769px) {
  .modal-content {
    margin: 0 auto;
    max-height: calc(100vh - 40px);
    width: 640px;
  }
}