.grid {
display: flex;
flex-wrap: wrap;
margin: 20px auto !important;
margin-top: 30px;
margin-left: 0px;
padding: 0;
}
.grid li {
list-style: none !important;
display:flex-root
width: 50%;
float: left;
display: list-item;
width: 20%
}

.image-slider div {
flex: 1;
margin: 5px
}

.image-slider div img {
width: 100%;
height: auto;
min-width: 125px;
}

.image-slider .wide-only {
display: none;
}
.grid .img-icon {
max-width: 100%;
}

h3 {
text-align: center;
font-weight: bold;
}
.rte h3 {
font-size: 32px;
}
@media(max-width:575px) {
.grid li {
width:37%
}
.rte h3 {
font-size:16px !important;
}
}
@media(min-width:873px) {
.grid li {
margin: auto;
}
}
@media(max-width:880px) {
.image-slider {
display: block;
flex: 1/* not sure what this should be - tried display: flex too */
}
}
--></style>
<h3 style="color: #1363a0 !important;">SHOP BY CATEGORY</h3>
<div class="image-slider" style="text-align: start;">
<ul class="grid">
<li><a href="https://www.herbspro.in/collections/personal-beauty-caret" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Personal_Beauty_Care.jpg?v=1608551627" alt="Personal & Beauty Care" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/health-fitness" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Health_Fitness.jpg?v=1608551717" alt="Health & Fitness" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/vitamins-supplements" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Vitamin_Supplements.jpg?v=1608552043" alt="Vitamins & Supplements" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/groceries" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Groceries.jpg?v=1608552101" alt="Groceries" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/mom-and-baby" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Mom_Baby.jpg?v=1608552189" alt="Mom & Baby" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/medical-and-ambulatory-supplies" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Medical_Ambulatory_Supplies.jpg?v=1608552240" alt="Medical and Ambulatory Supplies" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.in/collections/books-media" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Books_Media.jpg?v=1608552346" alt="Books & Media" height="300" width="300"></a></li>
<li><a href="https://www.herbspro.com/collections/pet-care-1" target="_self"><img src="https://cdn.shopify.com/s/files/1/0196/7092/5412/files/Pet_Care.jpg?v=1608552410" alt="Digestive Support" height="300" width="300"></a></li>
</ul>
</div>