How To Change Product Box CSS

.item-grid:after {
  content: "";
  display: block;
  clear: both;
}

.item-box {
  position: relative;
  width: 100%;
  float: left;
  margin: 0 0 80px;
  text-align: left;
}

.item-box .picture {
  z-index: 1;
  background-color: #fff;
  margin: 0 0 20px;
}

.item-box .picture a {
  display: block;
  position: relative;
}

.item-box .picture a:focus {
  opacity: 0.85;
}

.item-box .picture a:before {
  content: "";
  display: block;
  padding-top: 100%;
}

.item-box .picture a img {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  max-width: 100%;
  max-height: 100%;
  margin: auto;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  -webkit-transform: translateZ(0) scale(1.0, 1.0);
}

.item-box:hover .picture a img {
  opacity: 0.85;
}

.item-box .details {
  padding: 0 10px;
}

.item-box .product-title {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.2;
  font-weight: normal;
  color: #4ab2f1;
}

.item-box .product-title a {
  display: block;
}

.item-box .product-title a:hover,
.item-box .product-title a:focus {
  color: #248ece;
}

.item-box .sku {
  margin: 0 0 15px;
}

.item-box .product-rating-box {
  display: inline-block;
  margin: 0 0 10px;
}

.item-box .rating {
  background: url('../images/rating1.png') repeat-x;
  width: 95px;
  height: 14px;
}

.item-box .rating div {
  background: url('../images/rating2.png') repeat-x;
  height: 14px;
}

.product-grid .item-box .description:not([data-short-description]) {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  margin: 0 0 15px;
  height: 66px;
  line-height: 22px;
}

.item-box .description[data-short-description] {
  display: none;
}

.item-box .description a {
  display: block;
  overflow: hidden;
}

.item-box .prices {
  margin: 0 0 10px;
  overflow: hidden;
}

.item-box .old-price {
  margin: 0 5px 0 0;
  font-size: 16px;
  color: #aaa;
  text-decoration: line-through;
}

.item-box .actual-price {
  margin: 0 5px 0 0;
  font-size: 16px;
  color: #666;
}

.item-box .tax-shipping-info a {
  color: #4ab2f1;
}

.item-box .tax-shipping-info a:hover,
.item-box .tax-shipping-info a:focus {
  text-decoration: underline;
}

.item-box .buttons {
  margin: 0;
  font-size: 0;
}

.item-box button {
  display: inline-block;
  height: 40px;
  border: none;
  vertical-align: middle;
}

.item-box .product-box-add-to-cart-button {
  width: 60%;
  background-color: #4ab2f1;
  text-align: center;
  font-size: 15px;
  color: #fff;
  text-transform: uppercase;
}

.item-box .product-box-add-to-cart-button:hover,
.item-box .product-box-add-to-cart-button:focus {
  background-color: #248ece;
}

.item-box .add-to-compare-list-button,
.item-box .add-to-wishlist-button {
  width: 20%;
  border-left: 1px solid #fff !important;
  background-color: #eaeaea;
  background-position: center;
  background-repeat: no-repeat;
  font-size: 0;
}

.item-box .add-to-compare-list-button {
  background-image: url('../images/compare-button.png');
}

.item-box .add-to-wishlist-button {
  background-image: url('../images/wishlist-button.png');
}

.item-box .add-to-compare-list-button:hover,
.item-box .add-to-compare-list-button:focus,
.item-box .add-to-wishlist-button:hover,
.item-box .add-to-wishlist-button:focus {
  background-color: #ddd;
}

.product-grid,
.product-list {
  margin: 0 0 50px;
}

.product-grid .title {
  margin: 0 0 30px;
  border-bottom: 1px solid #ddd;
  padding: 0 0 15px;
  font-size: 30px;
  font-weight: normal;
  color: #444;
}

.product-grid .title strong {
  font-weight: normal;
}

@media all and (min-width: 481px) {
  .item-box {
    width: 49%;
    margin: 0 0.5% 50px;
  }

  .item-box:nth-child(2n+1) {
    clear: both;
  }

  .item-box .product-rating-box {
    margin: 0 0 15px;
  }

  .item-box .prices {
    min-height: 40px;
  }

  .item-box .product-title {
    min-height: 42px;
    margin: 0 0 5px;
  }
}

@media all and (min-width: 769px) {
.item-box {
    width: 32.33333%;
    margin: 0 0.5% 50px;
  }

  .item-box:nth-child(2n+1) {
    clear: none;
  }

  .item-box:nth-child(3n+1) {
    clear: both;
  }

  .product-list .item-box {
    float: none;
    width: auto;
    margin: 0 5px 20px;
  }

  .product-list .item-box .product-item:after {
    content: "";
    display: block;
    clear: both;
  }

  .product-list .item-box .picture {
    float: left;
    width: 220px;
  }

  .product-list .item-box:hover .picture a img,
  .product-list .item-box:focus .picture a img {
    opacity: 1;
  }

  .product-list .item-box .picture:hover a img,
  .product-list .item-box .picture:focus a img {
    opacity: 0.85;
  }

  .product-list .item-box .picture + .details {
    margin: 0 0 0 240px;
  }

  .product-list .item-box .product-title {
    height: auto;
    padding: 10px 0;
    font-size: 18px;
  }

  .product-list .item-box .description {
    display: block;
    margin: 0 0 10px;
    line-height: 22px;
  }

  .product-list .item-box .prices {
    height: auto;
    margin: 0 0 30px;
  }

  .product-list .item-box .buttons {
  }

  .product-list .item-box .product-box-add-to-cart-button {
    width: auto;
    min-width: 150px;
    padding: 0 20px;
  }

  .product-list .item-box .add-to-compare-list-button,
  .product-list .item-box .add-to-wishlist-button {
    width: 42px;
  }
}

@media all and (min-width: 1001px) {
/*** CATEGORY ***/
  .item-box .buttons {
    text-align: left;
  }
}