transfer.sh-web/src/styles/includes/preview.less

.preview-wrapper {
    padding-bottom: 30px;
}

html {
  min-height:100%;
  position: relative;
}
#download {

padding-bottom:240px;
    footer {
        bottom: 0; 
        left: 0;
        width: 100%;
        position: absolute;
        z-index: -1;
    }
}

.qrcode {
  img {
    width: 150px;
    height: 150px;
    border: 0 solid black;
  }
}
.preview-image  {
	img {
		margin: 0 auto;
		display:block;
		max-width: 800px;
		max-width: 100%;
	}
padding: 0;
padding: 0px;
}

.overlay {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.10);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.2s ease;
  .active & {
    visibility: visible;
    opacity: 1;
  }
}

.copy-link-wrapper {
  z-index: 200;
  padding: 2em;
  position: fixed;
  top: 50%;
  left: 50%;
  width: 50%;
  max-width: 500px;
  min-width: 300px;
  background-color: @blue;
  border-radius: 2px;
  transform: translateX(-50%) translateY(-50%);
  opacity: 0;
  transition: opacity 0.2s ease;
	clip:rect(1px 1px 1px 1px);
	opacity: 0;
	top: -9999999px;
	left: -9999999px;
  .active & {
    clip: auto;
	  opacity: 1;
	  top: 50%;
	  left: 50%;
  }
	p {
		font-size: 20px;
		color: #fff;
	}
  input {
    background-color: @light-gray;
    color: @text-color;
    border: 0;
    font-size: 1em;
    padding: 1em;
    margin: 0;
    width: 100%;
    border-radius: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .error {
    text-align: center;
    color: #E7483B;
    display: block;
    padding: 0.5em;
  }
}

#md-preview {
	padding-bottom: 30px;
}

video, audio {
  margin: 0 auto;
  width: 100%;
}

.wrap {
  width: 40%;
  height: 40%;
  margin: 20px auto;
}

::-webkit-media-slider-thumb {
  -webkit-appearance: none;
  background: red;
}