.banner {
  display: block;
  margin: auto;
  width: 98%; }

.sim-content {
  width: 100%;
  position: relative; }

.sim-bg {
  display: block;
  margin: auto;
  width: 98%; }

.btn-sail {
  position: absolute;
  width: 150px;
  height: 152px;
  left: 63%; }

.i-firstsail {
  top: 155px; }

.ii-secondsail {
  top: 475px; }

.iii-thirdsail {
  top: 795px; }

.up-btn, .down-btn {
  display: block;
  margin: 8px 0px;
  width: 150px;
  height: 64px;
  cursor: pointer;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center center;
  -webkit-transition: 0.2s;
  transition: 0.2s; }
  .up-btn:hover, .down-btn:hover {
    -webkit-transform: scale(1.05);
            transform: scale(1.05); }

.up-firstsail {
  background-image: url("../img/up-start.png"); }

.down-firstsail {
  background-image: url("../img/down-1230.png"); }

.up-secondsail {
  background-image: url("../img/up-start.png"); }

.down-secondsail {
  background-image: url("../img/down-0309.png"); }

.up-thirdsail {
  background-image: url("../img/up-start.png"); }

.down-thirdsail {
  background-image: url("../img/down-0427.png"); }

.up-sailclose {
  background-image: url("../img/up-close.png");
  cursor: not-allowed; }

.down-sailrank {
  background-image: url("../img/down-rank.png"); }

.up-notyet {
  background-image: url("../img/up-notyet.png"); }