BODY {
  --triHeight: 4.33vw;
  --triWidth: 10vw;
  background: mediumblue;
  margin:0;
  padding:0;
}
.center{
  position: fixed;
  display: block;
  margin-left: calc(50vw - var(--triWidth)/2);
  top: calc(50vh - var(--triHeight));
}
.tri{
  width: 0; 
  height: 0; 
  border-left: calc(var(--triWidth)/2) solid transparent;
  border-right: calc(var(--triWidth)/2) solid transparent;
  border-bottom: calc(var(--triHeight)*2) solid black;
  left:0;
}
.square{
  width: 0; 
  height: 0; 
  border-left: calc(var(--triHeight)) solid black;
  border-right: calc(var(--triHeight)) solid black;
  border-bottom: calc(var(--triHeight)*2) solid black;
  left:0;
}
.numCenter{
  height: var(--triHeight);
  top: var(--triHeight);
  width:var(--triWidth);
  left:calc(var(--triWidth)/-2);
  font-size:calc(var(--triHeight)/2);
  color:blue;
  padding:0;
  margin:0;
  border:0;
  position:absolute;
  text-align:center;
}
/* Popup container - can be anything you want */
.popup {
  position: relative;
  display: inline-block;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* The actual popup */
.popup .popuptext {
  visibility: hidden;
  width: var(--triWidth);
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 0.5vw;
  padding: 1vw 0;
  position: absolute;
  z-index: 1;
  top:calc(var(--triHeight)*2);
  left: 50%;
  margin-left: calc(var(--triWidth)/-2);
}

/* Toggle this class - hide and show the popup */
.popup .show {
  visibility: visible;
  -webkit-animation: fadeIn 1s;
  animation: fadeIn 1s;
}

/* Add animation (fade in the popup) */
@-webkit-keyframes fadeIn {
  from {opacity: 0;} 
  to {opacity: 1;}
}

@keyframes fadeIn {
  from {opacity: 0;}
  to {opacity:1 ;}
}

.pentagon {
    margin-top: calc(var(--triWidth)*0.85/2.25);
    width: calc(var(--triWidth)*0.54);
    box-sizing: content-box;
    border-width:calc(var(--triWidth)*0.5) calc(var(--triWidth)*0.18) 0;
    border-style: solid;
    border-color: black transparent;
}
.pentagon:before {
      content: "";
      position: absolute;
      height: 0;
      width: 0;
      top: calc(var(--triWidth)*-0.85);
      left: calc(var(--triWidth)*-0.18);
      border-width: 0 calc(var(--triWidth)*0.45) calc(var(--triWidth)*0.35);
      border-style: solid;
      border-color: transparent transparent black;
}