.hidden {
    display: none;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

h2 {
    padding-left: 10px;
    padding-bottom: 4px;
    border-bottom: 2px dotted #ABADB3;
}

.col {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 33%;
    height: 100%;
}

.col:nth-of-type(1) {
    left: 0;
    border-right: 2px dotted #b3302a;
}

.col:nth-of-type(2) {
    left: 33%;
    border-right: 2px dotted #b3302a;
}

.col:nth-of-type(3) {
    right: 0;
    width: 34%;
}

textarea {
    border: none;
    width: 100%;
    border-bottom: 2px dotted #ABADB3;
    resize: vertical;
    padding: 10px;
}

.output {
    width: 100%;
    padding: 10px;
}

#clipboard {
    background-image: url("clipboard.svg");
    background-repeat: no-repeat;
    padding-left: 30px;
    background-size: 16px;
    background-position: 6px 6px;
    line-height: 1.8em;
}

button {
    margin: 12px 0 3px 10px;
    background-color: lightgrey;
    padding: 5px;
    border: none;
    border-radius: 3px;
    font-size: 0.9em;
    cursor: pointer;
}

button:hover {
    background-color: grey;
}