* {
    padding: 0;
    margin: 0;
}

header>div {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 10;
}

li {
    display: inline;
    float: left;
    width: 25%;
    text-align: center;
}

li>a {
    display: block;
    padding: 8px;
    background-color: #dddddd;
}

a,
.image-container {
    -webkit-transition: ease-in-out 0.3s;
    -moz-transition: ease-in-out 0.3s;
    transition: ease-in-out 0.3s;
}

li>a:hover {
    background-color: rgba(245, 245, 245, 1);
    text-decoration: none;
    color: #000000;
    -webkit-transition: ease-in-out 0.3s;
    -moz-transition: ease-in-out 0.3s;
    transition: ease-in-out 0.3s;
}

.product-list {
    margin-top: 40px;
}

.product-card {
    border: 10px solid whitesmoke;
    padding: 10px;
}

.product-card:hover .image-container {
    -webkit-box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.75);
    -moz-box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.75);
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.75);
    -webkit-transition: ease-in-out 0.3s;
    -moz-transition: ease-in-out 0.3s;
    transition: ease-in-out 0.3s;
}

.image-container {
    position: relative;
    background-color: whitesmoke;
    margin: 10px;
}

.button {
    display: block;
    position: absolute;
    top: 40%;
    left: 5%;
    border: 2px solid yellow;
    width: 90%;
    height: 40px;
    font-size: 16px;
    line-height: 35px;
    text-align: center;
    text-transform: uppercase;
    text-decoration: none;
    color: yellow;
}

.add-to-cart {
    top: calc(40% + 50px);
}

.button:hover {
    text-decoration: none;
    background-color: whitesmoke;
    border: 2px solid whitesmoke;
    color: #000000;
    -webkit-transition: ease-in-out 0.3s;
    -moz-transition: ease-in-out 0.3s;
    transition: ease-in-out 0.3s;
}

img {
    width: 100%;
    height: 100%;
}

h5::before {
    content: "\f005 \f005 \f005 \f005 \f123";
    display: block;
    color: yellow;
    font-family: FontAwesome;
}