.content {
  margin: 0px;
  margin-bottom: 40px;
  max-width: 640;
  border-radius: 20px;
}

.center {
  display: flex;
  justify-content: center;
}

#videoFlex {
  flex-direction: row;
  flex-wrap: wrap;
  -webkit-user-select: none;     
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

#videoFlex span {
  display: flex;
  justify-content: center;
  flex-direction: column;
  min-height: 5vh;
  min-width: 5vw;
  margin: 1vmax;
}

#videoFlex span input {
  margin: 0.5vmax;
}

iframe {
  margin: 40px;
}

#openSli {
  color: #402fbd;
  cursor: pointer;
}

#right {
  position: absolute;
  top: 500px;
  right: 0px;
  margin-right: 7%;
  font-size: 50;
  cursor: pointer;
}

#left {
  position: absolute;
  top: 500px;
  left: 0px;
  margin-left: 7%;
  font-size: 50;
  cursor: pointer;
}