.wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-bottom: 20px;
}

.slider {
  width: 100%;
  margin: 0 auto 10px;
  background-color: rgba(0,0,0,1.00);
}

.slider li{
   border: rgba(143,6,6,1.00) 3px solid;
}

.slide-item img {
  width: 100%;
}

.thumbnail-list {
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.thumbnail-item {
  flex: 0 1 16%;
  margin-bottom: 10px;
  box-sizing: border-box;
  position: relative;
   border: rgba(143,6,6,1.00) 2px solid;
   cursor: pointer;
}
.thumbnail-item:after {
  content: "";
  background-color: rgba(0, 0, 0, 0.5);
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
  transition: 0.3s opacity linear;
}
.thumbnail-item.thumbnail-current:after {
  opacity: 0;
}
.thumbnail-item img {
  width: 100%;
  margin: 0 auto;
}


/* 〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓
   スマホ版
   〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓 */

@media screen and (max-width: 480px) {

.thumbnail-item {
  flex: 0 1 32%;
  margin-bottom: 10px;
  box-sizing: border-box;
  position: relative;
}

}