.art-content-box{
  font-size: 16.5px;
  line-height: 27px;
  padding-bottom: 20px;
}

h1{
  margin: 0;
}

video{
  width: 100%;
  background-color: #ccc;
}

.art-date{
  display: block;
  border-bottom: 1px solid #f2f2f2;
  padding-bottom: 5px;
  margin-bottom: 5px;
}

.picture{
  display: block;
  margin: 10px 0;
  font-size: 14px;
}

.picture img{
  width: 100%;
}

.art-content{
  line-height: 30px;
  word-break: break-word;
}

.art-content a{
  text-decoration: underline !important;
}

.art-content img{
  max-width: 100%;
}

.extra-list{
  list-style-type: square;
  font-size: 18px;
  line-height: 2;
  margin: 20px 0;
}

.extra-item span{
  font-size: 15px;
}

@media (min-width: 768px) {
  .media-box{
    float: right;
    margin-left: 30px;
  }
  video{
    width: 700px;
    height: 500px;
  }
  .image-box{
    direction: rtl;
    column-gap: 20px;
  }
  .image-box.column-2{
    column-count: 2;
  }
  .image-box.column-3{
    column-count: 3;
  }
  .picture{
    page-break-inside: avoid;
    margin: 0;
    width: 220px;
    padding: 10px 10px 5px;
    text-decoration: underline;
    background-color: #f5f5f5;
    text-align: center;
  }
}