* {
  margin: 0%;
  padding: 0%;
  background-color: antiquewhite;
}
h1{
  text-align: center;
  color: black;
}
.invisible {
  opacity: 0;
}

#container_Lv0 {
  position: relative;
  width: 35em;
  margin: 0 auto;
  border: 3px solid black;
  overflow: hidden;
  border-radius: 1em;
  
}
#container_Lv1 {
  display: flex;
  min-width: fit-content;
}
  .container_Lv2 {
      position: relative;
      height: 30em;
      width: 35em;
      background-color: rgba(0, 0, 0, 0.707)
  }
  .container_Lv2 img{
      user-select: none;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translateX(calc(-50%)) translatey(calc(-50%));
      max-height: 30em;
      max-width: 35em;
     
  }
.design{
   color: blue;
   animation: mymove 5s infinite;
   z-index: -1;
   text-align: center;
   
}



@keyframes mymove {
  0%   {top: 0px; left: 0px;}
  25%  { top: 0px; left: 150px;}
  50%  { top: 0px; left: 250px;}
  75%  { top: 0px; left: 350px;}
  100% { top: 0px; left: 450px;}
}

#next_Btn_div {
  position: absolute;
  top: 50%;
  right: 0%;
  transform: translateY(calc(-50%));
  background-color: white;
  padding-top: 0.4em;
  padding-bottom: 0.4em;
  padding-left: 0.6em;
  padding-right: 0.6em;
  border-radius: 2em;
  transition: opacity 0.3s ease-in-out;
}
  #next_Btn_div svg{
      transform: translateX(0.1em) translateY(0.1em);
  }
  #next_Btn_div:active {
      transform: translateY(calc(-50%)) scale(0.9);
      box-shadow: 1px 1px 2px black;
  }
#prev_Btn_div {
  position: absolute;
  top: 50%;
  left: 0%;
  transform: translateY(calc(-50%));
  background-color: white;
  padding-top: 0.4em;
  padding-bottom: 0.4em;
  padding-left: 0.6em;
  padding-right: 0.6em;
  border-radius: 2em;
  transition: opacity 0.3s ease-in-out;
}
  #prev_Btn_div svg{
      transform: translateX(-0.1em) translateY(0.1em);
  }
  #prev_Btn_div:active {
      transform: translateY(calc(-50%)) scale(0.9);
      box-shadow: 1px 1px 2px black;
  }

#radio_Btns_container {
  position:absolute;
  bottom: 0%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-content: center;
  align-items: center;
  flex-direction: row;
  flex-wrap: nowrap;
  width: 80%;
  transition: opacity 0.3s ease-in-out;
}
.radio_Btn_div {
  margin-left: 0.3em;
  margin-right: 0.3em;
  cursor: pointer;
}