@charset "UTF-8";
/* CSS Document */

body {
    margin: 0;
    font-family: YuMincho, "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: large;
    font-style: normal;
    font-weight: normal;
}

header {
  background: #0cc;
  height: 700px;
  padding: 100px;
  box-sizing: border-box;
}

section {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 5%;
  box-sizing: border-box;
}

section div {
  width: 23%;
  height: 300px;
  margin: 0 0 2.5vw;
  padding: 3%;
  box-sizing: border-box;
  background: #09c;
}

.sa {
  opacity: 0;
  transition: all .5s ease;
}

.sa.show {
  opacity: 1;
  transform: none;
}

.sa--lr {
  transform: translate(-100px, 0);
}

.sa--rl {
  transform: translate(100px, 0);
}

.sa--up {
  transform: translate(0, 100px);
}

.sa--down {
  transform: translate(0, -100px);
}

.sa--scaleUp {
  transform: scale(.5);
}

.sa--scaleDown {
  transform: scale(1.5);
}

.sa--rotateL {
  transform: rotate(180deg);
}

.sa--rotateR {
  transform: rotate(-180deg);
}