2.css

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@100;200;300;400;500;600;700&display=swap');

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}
#top-bar{
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    box-shadow: 2px 4px 2px rgba(17, 16, 16, 0.5);
    position: fixed;
    background-color: #fff;
    color: #000;
    padding: 1rem 0;
    z-index: 1;
    margin-top: 0;
}
.nav-links{
    list-style: none;
}
/* burger */

.nav-links li{
    display: inline-block;
}
.nav-links a{
    text-decoration: none;
    color: rgb(27, 25, 25);
    letter-spacing: 2px;
}
.nav-links li:not(:first-child){
    margin-left: 3rem;
}
.cart{
    display: inline-block;
    cursor: pointer;
}
.cart a{
    color: #000;
}
.cart a sup{
    color: #fff;
    padding: 1px 5px;
    background: #009688;
    border-radius: 50%;
    font-size: 10px;
}    
.icons{
    display: flex;
    gap: 2rem;
    align-items: center;
}
#logo a{
    text-decoration: none;
}
#logo a h4{
    text-decoration: none;
    color: rgb(27, 25, 25);
    font-size: 2rem;
    font-weight: 400;
}
#logo span{
    color: #009688;
    letter-spacing: 2px;
}
#banner{
    padding-top: 75px;
}
.img-wrapper img{
    width: 50%;
}
#features{
    display: flex;
    justify-content: space-around;
    text-align: center;
    align-items: center;
    flex-wrap: wrap;
    padding: 2rem 0;
}
.img-wrapper{
    cursor: pointer;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    padding-top: 20px;
    background-color: #009688;
    margin: 1rem auto;
    animation: animate 3s linear infinite;
}
.img-container{
    padding: 2rem;
}
@keyframes animate {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 150, 136, 0.7), 0 0 0 0 rgba(0, 150, 136, 0.7);
    }
    40% {
        box-shadow: 0 0 0 40px rgba(0, 150, 136, 0), 0 0 0 0 rgba(0, 150, 136, 0.7);
      }
    80% {
        box-shadow: 0 0 0 40px rgba(0, 150, 136, 0), 0 0 0 30px rgba(0, 150, 136, 0);
      }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 150, 136, 0), 0 0 0 30px rgba(0, 150, 136, 0);
      }
}
/* clothing and Accessiories */
.card-container{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 4%;
}
.card{
    width: 15%;
    min-width: 200px;
    height: auto;
    margin: 30px 10px;
    cursor: pointer;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.card a{
    text-decoration: none;
    color: #fff;
}
.card .img img{
    width: 100%;
}
.card .details{
    padding-left: 10px;
    margin: 10px auto;
}
.card .details h3{
    text-align: left;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: .5px;
    color: rgb(27, 25, 25);
}
.card .details h4{
    margin-top: 10px;
    text-align: left;
    font-size: 12px;
    color: rgb(110, 110, 110);
}
.card .details h5{
    margin-top: 10px;
    text-align: left;
    font-size: 15px;
    letter-spacing: 2px;
    color: #009688;
}
.section-heading{
    font-weight: 400;
    padding-left: 7rem;
}

/* product-page */

#product{
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px;
    display: flex;
    flex-wrap: wrap;
    padding-top: 75px;
}
.left-column{
    width: 40%;
}
.left-column img{
    width: 100%;
    margin-top: 50px;
}
.right-column{
    width: 60%;
    margin-top: 40px;
    padding-left: 30px;
}
.product-description{
    margin-top: 40px;
}
.product-description h1{
    font-size:44px;
    font-weight: 500;
    letter-spacing: -2px;
}
.product-description h4{
    margin-top: 20px;
    font-weight: 400;
    font-size: 20px;
    letter-spacing: 1px;
    color: rgb(27, 25, 25);
}
.product-description h3{
    margin-top: 20px;
    font-weight: 400;
    font-size: 20px;
    letter-spacing: 1px;
    color: rgb(27, 25, 25);
}
#description{
    font-size: 15px;
    font-weight: 200;
    padding:1rem 0;
    line-height: 1.5;
}
.product-description h3 span{
    color: #009688;
    font-weight: 700;
}
.product-preview .previewImg{
    display: flex;
    flex-wrap: wrap;
    justify-content: left;
    margin-top: 20px;
}
.product-preview .previewImg img{
    margin: 5px;
    width: 15%;
    height: 30%;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
}
.btn button{
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    padding: 10px 20px;
    letter-spacing: 2px;
    background-color: #009688;
    border: none;
    outline: none;
    cursor: pointer;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}
img.active{
    border: 2px solid #009688;
}

/* footer */

footer{
    display: flex;
    width: 100%;
    justify-content: space-around;
    background-color: #000;
    color: #fff;
    padding: 2rem 1rem;
    margin-top: 2rem;
}
footer ul li{
    list-style: none;
    font-size: 1rem;
    text-transform: uppercase;
}
footer ul li a{
    text-decoration: none;
    text-transform: uppercase;
    color: #fff;
    opacity: 60%;
    font-size: .8rem;
    display: inherit;
    margin-top: 1rem;
}
footer ul li a:hover{
    color: #009688;
}

/* -----------------checkOut-page--------------------- */

#cart-section{
    padding-top: 90px;
    margin:0 6%;
}
#cart-section h1{
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 2rem;
}
.cart-container{
    display: flex;
    justify-content: space-around;
}
.item{
    width: 600px;
    display: flex;
    margin-top: 25px;
    border-radius: 4px;
    padding: 15px;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}
.item img{
    width: 80px;
    height: 100px;
    border-radius: 4px;
}
.item .detail{
    padding-left: 15px;
}
.item .detail p{
    font-size: 16px;
    margin-top: 8px;
    letter-spacing: 2px;
    color: #000;
} 
.total-amount{
    width: 300px;
    box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.4);
    padding: 2rem 1rem;
    border-radius: 8px;
}
.total-amount h2{
    font-size: 2rem;
    font-weight: 500;
}
.total-amount p{
    margin:.5rem 0;
}
.total-amount button{
    background-color: #009688;
    padding: .7rem 1rem;
    border: none;
    outline: none;
    border-radius: 8px;
    color: #fff;
    font-weight: 400;
    cursor: pointer;
}

/* order-confirm */
.order-confirm{
    padding-top: 4rem;
}
.order-confirm img{
    width: 100%;
}
.order-confirm div{
    margin: 0 auto;
    width: 40%;
}
.order-confirm p,.order-confirm h2{
    text-align: center;
}
.order-confirm h2{
    font-weight: 600;
}

@media screen and (max-width:75rem) {
    
    .img-container{
        width: 200px;
        height: 200px;
    }
    .nav-links{
        list-style: none;
        display: none;
    }
    /* burger */
    .burger div{
        width: 25px;
        height: 3px;
        background-color: #000;
        margin:5px;
        transition: all .3s ease;
    }
    .burger{
        cursor: pointer;
    }
    .nav-links
    {   list-style:none;
        position: absolute;
        top: 73px;
        background: #009688;
        display: flex;
        flex-direction: column;
        align-items: center;
        height: 50vh;
        justify-content: space-around;
        width: 50%;
        color: #fff;
        right: 0;
        transform: translateX(100%);
        transition: all .5s;
    }
    .nav-links li a{
        color: #fff;
    }
    .nav-links li:not(:first-child){
        margin-left: 0;
    }
    .nav-links.active{
        transform: translateX(0%) !important;
    }
    .burger.active #line-1{
        transform: rotate(-45deg) translate(-5px,6px);
    }
    .burger.active #line-2{
        opacity: 0;
    }
    .burger.active #line-3{
        transform: rotate(45deg) translate(-5px,-6px);
    }
    footer{
        flex-wrap: wrap;
    }
}
@media screen and (max-width:40rem) {
    #product{
        flex-direction: column;
        width: 100%;
    }
    .left-column{
        width: 100%;
        max-width: 70%;
        margin: 0 auto;
    }
    .right-column{
        width: 100%;
        max-width: 80%;
    }
    .product-description{
        margin-top: 0px;
    }
    .product-description h1{
        font-size: 2rem;
    }
    .cart-container{
        flex-direction: column;
    }
    .item{
        width: 100%;
        max-width: 100%;
    }
    .total-amount{
        margin-top: 1rem;
    }
}
@media screen and (max-width:500px) {
    #logo a h4{
        font-size: 1rem;
    }
    #banner{
        padding-top: 65px;
    }
    .nav-links{
        top:60px;
    }
    footer ul{
        height: 200px;
        width: 200px;
    }
    footer{
        text-align: center;
    }
    #features{
        padding: 0;
    }
    .section-heading{
        padding: 1rem 2rem;
    }
}