.yui3-skin-sam .sm-editor-input {
    border: 1px solid #efefef;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    height: 100%;
    padding: 0.5em;
    width: 100%;
}

.yui3-skin-sam .sm-editor-input:focus {
    border-color: #afafaf;
    outline: none;
}