body, html {
    height: 100%;
}

* {
    box-sizing: border-box;
    font-family: sans-serif;
}

table {
    display: inline-block;
    width: calc(100% - 30px);
    height: calc(100% - 30px);
    overflow: auto;
    font-size: 90%;
    border-collapse:collapse
}

td {
    border-right: 1px rgba(0, 0, 0, 0.12) solid;
    display: inline-block;
    padding: 0.5em;
    width: 85px;
    height: 2.1em;
    text-align: center;
    overflow: auto;
    outline: 0;
}
td:focus {
    width: auto;
    min-width: 85px;
    background: #FFF;
    position: absolute;
    border: 2px solid #64b5f6;
    padding: calc(0.5em - 2px);
}

thead td {
	font-weight: 600;
}

td:focus + td {
    margin-left: 85px;
}

tr {
    border-bottom: 1px rgba(0, 0, 0, 0.12) solid;
    display: block;
}
.table-editor {
    width: 100%;
    height: 100%;
    position: relative;
    white-space: nowrap;
}

.add-button {
    width: 100%;
    height: 30px;
    text-align: center;
    background: #eee;
    padding: 0.35em;
    vertical-align: top;
    cursor: pointer;
}
.add-button:hover {
    background: #DDD;
}
.add-column {
    height: 100%;
    width: 30px;
    display: inline-block;
}

.add-row {
    margin-top: -30px;
}