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

.two {
    margin: 4rem 0;
}

.three {
    padding: 2rem 1rem 4rem 1rem;
}

.four {
border: none;
    border-top: 10px solid #dddddd;
}

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

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

.bsetwo {
    box-sizing: border-box;
}

.overflow-example {
    width: 50%;
}

.oetwo {
     height: 300px;
     margin-bottom:75px
}

.oethree {
    overflow: hidden;
}

.oefour {
    overflow: auto;
}