html, body {
  height: 100%;
  margin: 0;
	scroll-behavior: smooth;
}

img {
  content-visibility: auto;
}

.bg-grey-1 {
  background-color: #191c1f;
}

.bg-grey-2 {
  background-color: #212529;
}

.bg-grey-3 {
  background-color: #2a2a2e;
}

.bg-grey-4 {
  background-color: #383b3f;
}

.login-page {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  background-color: #2a2a2e;
  background-image: url('../images/bg.png');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center center;
  background-size: cover;
  content-visibility: auto;
}

.header-logo {
  position: fixed;
  left: 3.3rem;
  top: 3.7rem;
  height: 3rem;
  width: 3rem;
  line-height: 2rem;
  background-image: url('../images/logo.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.header-title {
  position: fixed;
  left: 7rem;
  top: 4rem;
  line-height: 2rem;
  font-size: 2rem;
  color: #ffc107;
  z-index: 10;
}

.dev {
  position: fixed;
  right: 2rem;
  bottom: 1rem;
  font-size: 0.7rem;
  color: lightgrey;
  z-index: 10;
}

.dev a {
  color: lightgrey;
  text-decoration: none;
}

.table-param_width {
  table-layout: fixed;
  width: 15rem; 
}

.chart-item {
  width: 100%; 
}

.chart-item_piechart {
  height: 23rem;
}

.chart-item_material {
  padding-left: 7vw;
  padding-right: 9vw;
  height: 16rem;
}

.chart-item_example {
  padding-left: 7vw;
  padding-right: 9vw;
}

.chart-item_curve {
  height: 20rem;
}

.recaptcha {
  height: 5rem;
}

.lang {
  position: fixed;
  right: 2rem;
  top: 2rem;
  line-height: 1rem;
  font-size: 1rem;
  z-index: 10;
}

.lang a, .lang:hover {
  color: lightgrey;
  text-decoration: none;
}

/**/
.bd-placeholder-img {
  font-size: 1.125rem;
  text-anchor: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

@media (min-width: 768px) {
  .bd-placeholder-img-lg {
    font-size: 3.5rem;
  }
}

@media (max-width: 576px) {
  .navbar-brand {
    text-align: center;
  }
  
  .navbar-menu {
    width: 75vw;  
  }

  .dropdown-menu {
    position: fixed;
    width: 16rem;
    top: 4rem;
    left: 6rem;
  }
}

.nav-link {
  font-size: 1.5rem;
}

.group-item {
  font-size: 1rem;
}

.menu-item {
  font-size: 1.5rem;
}

.form-search {
  height: 52px;
}

.nav-link-info {
  position: absolute;
  width: 1px;
  font-size: 0.875rem;
  font-weight: lighter; 
  line-height: 1rem;
  left: calc(7.5vw);
  top: 0.2rem;
  margin: 0px;
  padding: 0px; 
}

.navbar .navbar-toggler {
    top: 0.4rem;
    right: 0.6rem;
}

.scrollable {
  display: none;
  overflow-x: hidden;
  /*overflow-y: auto;*/
  overflow-y: scroll;
  /*padding-right: 17px;*/
  box-sizing: content-box;
}

#sidebarMenu {
  padding-left: 17px;
  background-color: #1c1c1f;
}

.navbar-brand {
  width: calc(18vw - 7px);
}