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;
  height: 100%;
}

body {
    margin-bottom: 60px;
    height: calc(100% - 60px);
}

main {
    position: relative;
    overflow: hidden;
    height: calc(100% - 20px);
}

.container {
    position: relative;
    height: calc(100% - 60px);
    margin-top: -4px;
}

/* https://developer.mozilla.org/ru/docs/Web/CSS/cursor */

.bi-arrows-fullscreen {
    cursor: pointer;
}

.editor-body {
    position: absolute;
    min-height: 100%;
    margin: 0;
    padding: 0;
    background-color: transparent;
    background-image: linear-gradient(black 2px, transparent 2px), linear-gradient(90deg, black 2px, transparent 2px), linear-gradient(rgba(55,55,55,.3) 1px, transparent 1px), linear-gradient(90deg, rgba(55,55,55,.3) 1px, transparent 1px);
    background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
    background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
    cursor: grab;
}
.editor-body:active {
    cursor: grabbing;
}