border-top-width: thin;
border-bottom-width: thick;
border-left-width: medium;
border-right-width: medium;

border-top-width: 1px;
border-bottom-width: 5px;
border-left-width: 15px;
border-right-width: 15px;
border-color: #0000ff

border-top-width: 1px

border-top-width: 1em;
border-bottom-width: 4em;
border-left-width: 2em;
border-right-width: 3em;
border-color: #ff00ff