.row {
    margin-bottom: 20px;
}

#similar-button, #edit-input-button, #edit-output-button {
    float: right;
}

.bracket {
    display: inline-block;
    width: 10px;
    border-top: 3px solid black;
    border-bottom: 3px solid black;
}

.bracket-left {
    border-left: 3px solid black;
}

.bracket-right {
    border-right: 3px solid black;
}

.content {
    display: inline-block;
    vertical-align: top;
    padding-left: 3px;
    padding-right: 3px;
}

.pair {
    margin-right: 2px;
    margin-left: 2px;
}


.pair:after {
    clear: both;
    display: table;
    content: " ";
}

.value {
    margin-left: 10px;
    float: right;
}

.row {
    margin-bottom: 20px;
}

#similar-button, #edit-input-button, #edit-output-button {
    float: right;
    margin-left: 5px;
}

.bracket {
    display: inline-block;
    width: 10px;
    border-top: 3px solid black;
    border-bottom: 3px solid black;
}

.bracket-left {
    border-left: 3px solid black;
}

.bracket-right {
    border-right: 3px solid black;
}

.content {
    display: inline-block;
    vertical-align: top;
    padding-left: 3px;
    padding-right: 3px;
}

.pair {
    margin-right: 2px;
    margin-left: 2px;
}


.pair:after {
    clear: both;
    display: table;
    content: " ";
}

.value {
    margin-left: 10px;
    float: right;
}

Increase horizontal space between "Edit input" / "Edit output" / "Similar rules" controls.
[Details] Increase horizontal space between "Edit input" / "Edit output"
/ "Similar rules" controls.
