// Within style tags in your html file
* {
    box-sizing: border-box;
}

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

.grid-sizer,
.grid-item {
    width: 23%;
}
@media (max-width: 575px) {
    .grid-sizer,
    .grid-item {
        width: 100%;
    }
}
@media (min-width: 576px) and (max-width: 767px) {
    .grid-sizer,
    .grid-item {
        width: 50%;
    }
}

/* To change the amount of columns on larger devices, uncomment the code below */

/* @media (min-width: 768px) and (max-width: 991px) {
  .grid-sizer,
  .grid-item {
    width: 33.333%;
  }
}
@media (min-width: 992px) and (max-width: 1199px) {
  .grid-sizer,
  .grid-item {
    width: 25%;
  }
}
@media (min-width: 1200px) {
  .grid-sizer,
  .grid-item {
    width: 20%;
  }
} */

.grid-item {
    float: left;
    border: 5px solid white;
    border-color: white;
}

.grid-item img {
    display: block;
    max-width: 100%;
}

.image {
    opacity: 1;
    display: block;
    width: 100%;
    height: auto;
    transition: 0.5s ease;
    backface-visibility: hidden;
}