styles.css

header{
    background-color: white;
    padding: 15px 0px;
}

body{
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    box-sizing: border-box;
    background-color: aliceblue;
}

header h1{
    width: 600px;
    margin:0%;
    margin:auto;
    border:0 ;
}

.post1{
    background-color: #fff;
    border: 1px solid #e6e6e6;
    margin-bottom: 80px;
    width: 600px;
    margin: auto;
    margin-top: 50px;
}

.post1 img {
    width: 600px;
    height: 400px;
}

    .post2{
        background-color: #fff;
        border: 1px solid #e6e6e6;
        margin-bottom: 80px;
        width: 600px;
        margin: auto;
        margin-top: 50px;
}
    
    
.post2 img {
        width: 600px;
        height: 400px;
}


.post3{
    background-color: #fff;
    border: 1px solid #e6e6e6;
    margin-bottom: 80px;
    width: 600px;
    margin: auto;
    margin-top: 50px;
}

.post3 img {
    width: 600px;
    height: 400px;
}

.post4{
    background-color: #fff;
    border: 1px solid #e6e6e6;
    margin-bottom: 80px;
    width: 600px;
    margin: auto;
    margin-top: 50px;
}

.post4 img {
    width: 600px;
    height: 400px;
}

.post5{
    background-color: #fff;
    border: 1px solid #e6e6e6;
    margin-bottom: 80px;
    width: 600px;
    margin: auto;
    margin-top: 50px;
}

.post5 img {
    width: 600px;
    height: 400px;
}