body{
    z-index:-3;
    position:absolute;
    width:100%;
    height:100%;
  }
  
  
  
 .image:hover  {opacity: 0.7;} 

  div { text-align: center; }
  div.item {
      display: inline-block;
      text-align: center;
      width: 100px;
  }
  .caption {
      display: block;
  
  }
  
  .box{	  
          width: 1380px;
          height: 800px;
          z-index:-2;
          border: 3px solid black;
          background-color: #e3f6f5;    
      }
  
      .disable {
        opacity: 0.5;
      }  
  
      .ins{
    position: absolute;
    top:11%;
    right:95px;
    background-color:#ffd803;
    color:#272343;
    border-radius: 6px;
    font-size: 18px;
    font-family: Raleway, sans-serif;
    font-weight: bold;
  }
  .ins:hover {
   background-color: #bae8e8;
   color: #000;
   align-content: center;
  }
  .ins:hover a{
   color: #000;
  }
  
  .dropdown-content {
            display:none;
            position: absolute;
            margin-left:75%;
            margin-top: 1%;
            background-color: white;
            width: 320px;
            height: auto;
            border:4px;
            border-radius: 4px;
            padding: 10px;
            font-family: sans-serif;
            font-size: 15px;
            box-shadow: 0px 8px 10px 0px rgba(0,0,1,1);
            z-index: 1;
            overflow: auto;
          }
          .dropdown-content p:hover {background-color: #e3f6f5}
          .show {display:block;}
          
              .block{
                  display: none;
              }
  
  
  .footer{
    position:absolute;
    top:797px;
    left: -4px;
    width: 1381px;
    background-color: black;
    color: white;
    text-align: center; 
     font-size: 18px;
     font-family: 'Raleway', sans-serif;
  }
  

.components                                            /*      fieldset position  */
{   
    
    border-radius: 5px;
    margin-left:50px;
    margin-top:10px;
    width:1000px;
    height:auto;
    font-size: 20px;
    font-family: sans-serif;
}


/* working area  */

#mid {
   
    margin-top:1rem;
    margin-left:-15rem;
    align-items: center;
    display: inline-block;
    height: 500px;
    width: 900px;
    box-shadow: 2px 4px 6px #262626;
    border-radius: 4px;
    background-image: url('../images/bg.jpg');
}

/* star */
#starImg
{
  cursor: pointer;
}
#PC1
{
  position:absolute;
  top:160px;
  left:300px;
 
 
  visibility:hidden;
}


#PC2
{
  position:absolute;
  top:160px;
  left:700px;
 
  visibility:hidden;
}

#PC3
{
  position:absolute;
  top:520px;
  left:300px;
 
 
  visibility:hidden;
}

#PC4
{
  position:absolute;
  top:520px;
  left:700px;
 
  visibility:hidden;
}

#LP1
{
  position:absolute;
  top:160px;
  left:300px;
   visibility:hidden;
}


#LP2
{
  position:absolute;
  top:160px;
  left:700px;
 
  visibility:hidden;
}

#LP3
{
  position:absolute;
  top:520px;
  left:300px;
 
 
  visibility:hidden;
}

#LP4
{
  position:absolute;
  top:520px;
  left:700px;
 
  visibility:hidden;
}

#HUB1
{
  position:absolute;
  top:320px;
  left:500px;
  visibility:hidden;
}

#SWITCH1
{
  position:absolute;
  top:320px;
  left:500px;
  visibility:hidden;
}

/* RING */
#ringImg
{
  cursor: pointer;
}

#ringImg:hover {opacity: 0.8;}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}

/* Modal Content (image) */
.modal-content {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
}

/* Caption of Modal Image */
#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 150px;
}

/* Add Animation */
.modal-content, #caption {  
  -webkit-animation-name: zoom;
  -webkit-animation-duration: 0.6s;
  animation-name: zoom;
  animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
  from {-webkit-transform:scale(0)} 
  to {-webkit-transform:scale(1)}
}

@keyframes zoom {
  from {transform:scale(0)} 
  to {transform:scale(1)}
}

/* The Close Button */
.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
}

.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
  cursor: pointer;
}

/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
  .modal-content {
    width: 100%;
  }
}

#PCR1
{
  position:absolute;
  top:150px;
  left:200px;
  visibility:hidden;
}


#PCR2
{
  position:absolute;
  top:150px;
  left:800px;
  visibility:hidden;
}

#PCR3
{
  position:absolute;
  top:500px;
  left:800px;
  visibility:hidden;
}

#PCR4
{
  position:absolute;
  top:500px;
  left:200px;
   visibility:hidden;
}

#LPR1
{
  position:absolute;
  top:150px;
  left:200px;
  visibility:hidden;
}


#LPR2
{
  position:absolute;
  top:150px;
  left:800px;
  visibility:hidden;
}

#LPR3
{
  position:absolute;
  top:500px;
  left:800px;
  visibility:hidden;
}

#LPR4
{
  position:absolute;
  top:500px;
  left:200px;
   visibility:hidden;
}

#HUBR1
{
  position:absolute;
  top:240px;
  left:380px;  
  visibility:hidden;
}

#HUBR2
{
  position:absolute;
  top:240px;
  left:600px;  
  visibility:hidden;
}

#HUBR3
{
  position:absolute;
  top:420px;
  left:600px; 
  visibility:hidden;
}

#HUBR4
{
  position:absolute;
  top:420px;
  left:380px;
  visibility:hidden;
}

#SWITCHR1
{
  position:absolute;
  top:240px;
  left:380px;  
  visibility:hidden;
}

#SWITCHR2
{
  position:absolute;
  top:240px;
  left:600px;  
  visibility:hidden;
}

#SWITCHR3
{
  position:absolute;
  top:420px;
  left:600px; 
  visibility:hidden;
}

#SWITCHR4
{
  position:absolute;
  top:420px;
  left:380px;
  visibility:hidden;
}



/* Bus */
#busImg
{
  cursor: pointer;
}

#CAB
{
  position:absolute;
  top:360px;
  left:220px;
  visibility:hidden;
}

#PCB1
{
  position:absolute;
  top:160px;
  left:290px;
  visibility:hidden;
}

#PCB2
{
  position:absolute;
  top:160px;
  left:582px;
  visibility:hidden;
}

#PCB3
{
  position:absolute;
  top:500px;
  left:440px;
  visibility:hidden;
}

#PCB4
{
  position:absolute;
  top:500px;
  left:710px;
  visibility:hidden;
}
#LPB1
{
  position:absolute;
  top:160px;
  left:290px;
  visibility:hidden;
}

#LPB2
{
  position:absolute;
  top:160px;
  left:582px;
  visibility:hidden;
}

#LPB3
{
  position:absolute;
  top:500px;
  left:440px;
  visibility:hidden;
}

#LPB4
{
  position:absolute;
  top:500px;
  left:710px;
  visibility:hidden;
}

#TER1
{
  position:absolute;
  top:342px;
  left:205px;
  visibility:hidden;
}

#TER2
{
  position:absolute;
  top:342px;
  left:900px;
  visibility:hidden;
}

/*mesh*/

#PCM1
{
  position:absolute;
  top:150px;
  left:200px;
  visibility:hidden;
}


#PCM2
{
  position:absolute;
  top:150px;
  left:800px;
  visibility:hidden;
}

#PCM3
{
  position:absolute;
  top:500px;
  left:800px;
  visibility:hidden;
}

#PCM4
{
  position:absolute;
  top:500px;
  left:200px;
   visibility:hidden;
}

#LPM1
{
  position:absolute;
  top:150px;
  left:200px;
  visibility:hidden;
}


#LPM2
{
  position:absolute;
  top:150px;
  left:800px;
  visibility:hidden;
}

#LPM3
{
  position:absolute;
  top:500px;
  left:800px;
  visibility:hidden;
}

#LPM4
{
  position:absolute;
  top:500px;
  left:200px;
   visibility:hidden;
}

#HUBM1
{
  position:absolute;
  top:240px;
  left:380px;  
  visibility:hidden;
}

#HUBM2
{
  position:absolute;
  top:240px;
  left:600px;  
  visibility:hidden;
}

#HUBM3
{
  position:absolute;
  top:420px;
  left:600px; 
  visibility:hidden;
}

#HUBM4
{
  position:absolute;
  top:420px;
  left:380px;
  visibility:hidden;
}

#SWITCHM1
{
  position:absolute;
  top:240px;
  left:380px;  
  visibility:hidden;
}

#SWITCHM2
{
  position:absolute;
  top:240px;
  left:600px;  
  visibility:hidden;
}

#SWITCHM3
{
  position:absolute;
  top:420px;
  left:600px; 
  visibility:hidden;
}

#SWITCHM4
{
  position:absolute;
  top:420px;
  left:380px;
  visibility:hidden;
}

.position-absolute {
  position: absolute !important;
  backdrop-filter: blur(6px);
}