web1 mainArea.css

#mainArea{
  margin: 0 20px 20px 20px;
  background: white;
  border-radius: 5px;
  padding: 10px;
  color: black;
  display: flex;
}

.sideList{
  list-style: none;
  padding: 0;
  margin: 0;
  user-select: none;
  background: #dbd9da;
  width: max-content;
}
.sideList>li{
  background: #eaeaea;
  margin: 4px 2px;
}
.sideList>li span{
  padding: 0 2px;
}
.sideList>li span::before{
  content: "▸";
  display: inline-block;
  transform: rotate(90deg) translateY(1px) translateX(-1px);
}
.sideList>li.hidden span::before{
  transform:none;
}

.sideList li ul{
  overflow: hidden;
  transition: height 0.2s;
}

.sideList li.hidden ul{
  height: 0 !important;
}

.sideList h3{
  color: dodgerblue;
  margin: 0;
  background: linear-gradient(180deg, #000000 , #555555);
  text-align: center;
}

.add{
  background: #dbd9da;
  width: min-content;
  margin: 0 auto;
}
.add h3{
  color: dodgerblue;
  margin: 0;
  background: linear-gradient(180deg, #000000 , #555555);
  text-align: center;
  padding: 0 10px;
}
.add iframe{
  width: calc(100% - 20px);
  border: none;
  margin: 10px 10px 6px 10px;
  background: white;
}
.middleArea{
  width: 100%;
  margin: 0 10px;
}
.sideArea{
  width: auto;
}
.textCard{
  background: #dbd9da;
  border: 2px solid #eaeaea;
}
.search{
  margin: 5px 25px;
  display: flex;
  padding: 10px;
  background: linear-gradient(180deg, #000000 , #555555);
  border-radius: 5px;
}
.search input{
  width: 100%;
}
.bigCard .cardHolder{
  display: flex;
}
.bigCard .card{
  width: 25%;
  height: 250px;
  margin: 10px;
  display: flex;
  flex-direction: column;
}
.bigCard h3{
  margin: 0;
  background: linear-gradient(180deg, #000000 , #555555);
  color: dodgerblue;
  padding: 5px;
}
.bigCard{
  background: #dbd9da;
  border: 2px solid #eaeaea;
}
.filmPoster{
  background: white;
  width: 100%;
  height: 100%;
}
.bigCard .card span{
  text-align: center;
}
.cardHolder .desciptionCard{
  width: calc(75% + 45px);
  margin: 10px;
}
.cardHolder .desciptionCard h4{
  margin: 0;
}
.newsCard{
  background: linear-gradient(180deg, #000000 , #555555);
  margin-top: 5px;
  display: flex;
  color: white;
}
.newsCard a{
  margin-left: 10px;
  text-decoration: none;
  height: 100%;
  width: 100%;
  display: block;
  color: dodgerblue;
}