html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  background-color: black;
}


#container {
  position: fixed;
  top: 0;
  left: 0;
  width: device-width;
  height: device-height;
  margin: 0;
  padding: 0;
  z-index: 4;
}
/*
.container {
  margin: 0;
  padding: 0;
}
/*
.button {
  position: relative;
  display: block;
  max-width: 50%;
  max-height: 50%;
}

.butt-pict {
  position: relative;
  display: inline-block;
  max-width: 100%;
  max-height: 100%;
  
}