* {
    margin: 0;
    padding: 0%;
}



header {
    background-color: steelblue;
    padding: 20px;
    align-items: center;
    margin-top: 20px;
}

body {
        width: 70%;
        margin: auto;
        background-color: #D3D3D3;
        
}

.article1 {
    background-color: steelblue;
    margin-top: 20px;
    height: 200%;
    width: 20%;
    border: 1px solid black;
    float: left;
    
}

.article2 {
    background-color: steelblue;
    margin-top: 20px;
    height: 200%;
    width: 20%;
    border: 1px solid black;
    float: right;
    
}

.article3 {
    background-color: steelblue;
    margin-top: 20px;
    height: 200%;
    width: 20%;
    border: 1px solid black;
    float: left;
    margin-left: 5%;
    margin-right: 5%;
}

footer {
    background-color: steelblue;
    padding: 20px;
    align-items: center;
    margin-top: 20px;
    
}