body{
    text-align: center;
    font-family: Arial;
    font-weight: bold;
}

h1{
    color: darkgreen;
}

.pyramid{
    margin: 50px auto;
}

.layer{
    margin: 5px auto;
    padding: 10px;
    background-color: lightgreen;
    border-radius: 20px;
    font-size: 24px;
    color: rgb(0, 60, 0);

}

.layer:nth-child(1) { 
    width: 200px; 
    background-color: #e8f5e8; 
    color: rgb(1, 109, 1);
}
.layer:nth-child(2) { 
    width: 250px; 
    background-color: #d4f0d4; 
    color: rgb(1, 109, 1);
}
.layer:nth-child(3) { 
    width: 300px; 
    background-color: #abe0ab; 
    color: rgb(2, 56, 2);
}
.layer:nth-child(4) { 
    width: 350px; 
    background-color: #82c382; 
    color: rgb(2, 56, 2);
}
.layer:nth-child(5) { 
    width: 400px; 
    background-color: #73b173; 
    color: white;
}
.layer:nth-child(6) { 
    width: 450px; 
    background-color: #609f60; 
    color: white;
}