.box-layers {
    background-color: #eeeeee;
    Padding: 2rem 1rem 4rem 1rem;
    border-top: 10px solid #dddddd;
    margin: 4rem 0; 
} 

p{ margin: 1em 0;}

.h2-wrapper{
    border: 1px solid black;
}

.box-sizing-example {
    background-color: #eeeeee;
    padding:2rem;
    border:10px solid #dddddd;
    width:100%;
    box-sizing: border-box;
}

.overflow-example {
    width: 50%;
    height:300px;
    overflow:auto;
}