style.css

body{
    background: none;
}
header > img{
    display: block;
    height: 155px;
    width:105px;
    margin-left: auto;
    margin-right: auto;
}
footer{
    display: flex;
    margin:0px 50px 0px 50px;
}
footer div{
    flex:1
}
footer div > img{
    height: 75px;
    width:45px;
    margin-left: 30px;
    padding: 8px;
    border: 3px solid;
}

footer div > p{
   text-align: right;
}

section{
    display: flex;
}
article{
    flex: 1;
    margin:0px 25px 0px 25px;
}

main{
    margin:0px 50px 0px 50px;
}

.banner{
    position: relative;
    height: 300px; 
    background-image: url('images/istockphoto-1199450864-170667a\ copy.jpg');
    background-size: cover; 
    align-items: center;
    border-radius: 30px;
}

.banner-content {
    position: relative;
    z-index: 1;
    padding: 20px; 
    background-color: rgb(104 90 82 / 12%); 
    border-radius: 50px;
    margin:0px 40px 0px 40px;
    color:#fff; 
    text-align: center; 
    text-shadow:0px 0px 20px #000;
}


.banner h1 {
    font-size: 37px;
    margin-bottom: 10px;
}

.banner p {
    font-size: 20px;
    line-height: 1.5;
}

nav li a {
    text-decoration: none;
    transition: color 0.3s ease;
    color: #000; 
}

nav li a:hover {
    color: #3b805b;
    text-decoration: solid;
    text-shadow: none;
}

nav ul{
    list-style: none;
    text-align: center;
    width: 850px;
    margin-left: auto;
    margin-right: auto;
    height: 26px;
    font-size: 22px;
    padding: 20px;
    border-radius: 15px;
    background-color:#adc6b7a6; 
    
}

nav li{
    display: inline-block;
    padding:0px 30px 0px 30px;
}

.content{
    text-align: center; 
    margin-top:40px;
}

.content article{
    height: 500px; 
    border-radius: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.content article img{
    border-radius: 30px;
}

.about{
    margin: 30px 180px 100px 180px;
}

.contact{
    margin: 30px 200px 100px 293px;
    font-size: 15px;
}

.product img{
    display: flex;
    height: 380px;
    width: 320px;
   
}

.product article{
    margin:30px 10px 100px;
}