*{
  margin: 0;
  padding: 0;
	box-sizing: border-box;
}

html,body{
  min-width: 100%;
  overflow-x: hidden;
  font-size: 16px;
  font-family: 'Montserrat', sans-serif;
}


.main {
  display:flex;
  --s: 30px; /* size */
  --r: 1; /* ratio */
  /* clip-path */
  --h: 0.25;  
  --v: 0.35; 
  --hc:calc(clamp(0,var(--h),0.5) * var(--s)) ;
  --vc:calc(clamp(0,var(--v),0.5) * var(--s) * var(--r)); 
  
  /*margin */
  --mv: 1px; /* vertical */
  --mh: calc(var(--mv) + (var(--s) - 2*var(--hc))/2); /* horizontal */
  /* for the float*/
  --f: calc(2*var(--s)*var(--r) + 4*var(--mv)  - 2*var(--vc) - 2px);

  margin-top: 25px;
}

.container {
  margin-top: 20px;
  font-size: 0; /*disable white space between inline block element */
  counter-reset:num;
  padding-bottom:calc(var(--s)*var(--r) + var(--mv));
}

.container div {
  width: var(--s);
  margin: var(--mv) var(--mh);
  height: calc(var(--s)*var(--r)); 
  display: inline-flex;
  font-size: 8px;
  clip-path: polygon(var(--hc) 0, calc(100% - var(--hc)) 0,100% var(--vc),100% calc(100% - var(--vc)), calc(100% - var(--hc)) 100%,var(--hc) 100%,0 calc(100% - var(--vc)),0 var(--vc));
  background: lightblue;
  margin-bottom: calc(var(--mv) - var(--vc)); 
  background-repeat: no-repeat;
  background-position: center;
}

.container::before {
  content: "";
  width: calc(var(--s)/2 + var(--mh));
  float: left;
  height: 135%;
  shape-outside: repeating-linear-gradient(     
                   #0000 0 calc(var(--f) - 2px),      
                   #000  0 var(--f));
}

.container div::before {
  content:counter(num);
  counter-increment:num;
  margin:auto;
  font-weight:bold;
}
body {font-family:sans-serif;}
h1 {text-align:center;}
.panel {position: absolute;top: 80px;right: 20px;padding: 10px;border: 1px solid;border-radius: 10px;background: #fff;font-family: sans-serif;opacity:.5}
.panel:hover {opacity:1}
.panel > div:not(:last-child) {border-bottom: 1px solid;padding-bottom: 10px;margin-bottom: 10px;}
*,*::before {transition:0.5s linear}



/*****Header ****/
header .navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  min-width: 100%;
  z-index: 10;
  background: #0f1423;
  border-bottom: 2px solid #0c2d48;
  padding: 7px 0;
}

header .navigation .logo{
  margin-left: 20px;
}

header .navigation .logo h1{
  color: #b1d4e0;
  font-size: 24px;
  line-height: 28px;
}

header .navigation .menu-list {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 45%;
  margin: auto 20px auto 0;
}

header .navigation .humbarger {
  margin-right: 20px;
  display: none;
 }
 
header .navigation .humbarger .bar{
  width: 30px;
  height: 2px;
  margin: 7px;
  background: #b1d4e0;
 }

header .navigation .menu-list li a {
  color: #b1d4e0;
  font-size: 1.25rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 1s ease, border 1s ease;
  text-decoration: none;
}

/* ====================
  Responsive Section
=======================*/
@media only screen and (min-width: 768px) and (max-width: 991px) {
  header .navigation .menu-list {
    width: 60%;
  }

  header .navigation .menu-list li a{
    font-size: 1rem;
  }
}
/* Large Mobile :480px. */
@media only screen and (max-width: 767px) {
  header .navigation .menu-list {
    position: absolute;
    top: 12vh;
    min-width: 100%;
    background: rgba(15, 20, 35, 0.99);
    text-align: center;
    display: none;
  }
  header .navigation .menu-list li {
    display: block;
  }
  header .navigation .menu-list li a {
    display: block;
    padding: 20px;
    transition: color 1s ease, padding 1s ease, background-color 1s ease;

  }

  header .navigation .menu-list li a:hover{
    color: #b1d4e0;
    padding-left: 30px;
    background: rgba(177, 212, 224, 0.2);
  }
  header .navigation .humbarger{
    display: block;
  }

  .main {
    margin-top: 33px;
  }

}