.container {
    min-height: 50px
}

.container:empty {
    border: 2px dashed #919191;
    min-height: 200px
}

.row {
    min-height: 50px
}

.row:empty {
    border: 2px dashed #919191;
    min-height: 150px;
    width: 100%;
    min-width: 500px
}

.dragging [class^=col-] {
    min-height: 150px;
    border: 2px dashed #919191
}

[class^=col-]:empty {
    min-height: 150px;
    border: 2px dashed #919191
}

[class^=col-]:empty > .drop-placeholder {
    width: 100%;
    height: 100%;
    border: none;
}

div:empty {
    border: 2px dashed #919191;
    min-height: 100px
}

html{
    height: 100%;
}

body {
    user-select: none;
    overflow-x: hidden;
    min-height: 100%;
}

body > .row {
    margin: 0
}

form {
    min-height: 50px
}

form:empty:before {
    pointer-events: none;
    display: block;
    width: 100%;
    height: 100px;
    content: 'Drag form elements here';
    text-align: center;
    background-color: #eee;
    color: #919191;
    font-size: 22px;
    border: 2px dashed #919191;
    padding-top: 33px
}

[contenteditable=true] {
    outline: #404040 solid 2px
}