CSS bootstrap

basic.cc

/** Predictable Layout */
.mostly-everything {
  box-sizing: border-box;
}
.maybe-everything {
  position: relative;
}

/** Smooth Animations */
.enter {
  animation-timing-function:
    cubic-bezier(0, .5, .5, 1);
}
.move {
  animation-timing-function:
    cubic-bezier(.5, 0, .5, 1);
}
.exit {
  animation-timing-function:
    cubic-bezier(.5, 0, 0, 1);
}

/** Layered Grids */
.some-layer {
  /* define the grid */
  display: grid;
  grid-gap: 10px;
  grid-template-rows: auto 300px;
  grid-template-columns: 3fr 1fr;
  grid-template-areas: 
    '🤔 🤔'
    '🤷‍♀️ 🍺'
    '👞 👞';
  
  /* position the layer */
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
}

/** Background Elements */
.background {
  /* layer it */
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  
  border-radius: inherit;
}

/** Shadow Elements */
.background:before {
  content: '';

  /* layer it */
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;

  /* style it */
  box-shadow:
    0 .5rem 1rem rgba(0, 0, 0, 0.1);
  opacity: 1;
}

/** Border Radius Transition */
@keyframes flip-border {
  from {
    border-top-left-radius:
      8rem 6rem;
    border-top-right-radius:
      8rem 6rem;
    border-bottom-left-radius:
      8rem 6rem;
    border-bottom-right-radius:
      8rem 6rem;
  }
  to {
    border-radius: 4rem;
  }
}

/** Curved Motion Paths */
.wrap { // container
  transform-origin: 0 -20vmin; // 𝚫y
  animation: wrap-curve 1s;
  will-change: transform;
}
@keyframes wrap-curve {
  from { transform: none; }
  to { transform: rotate(-90deg); }
}

/** Worst Case */
.sinful-layout-animation {
  transition: height .3s ease-in-out;
  
  // contain the layout to let the browser know
  // that height changes are isolated
  contain: layout;
}