react-box-selection/src/components/Selection.css

React component for making box selections on elements

.selection_wrapper {
    position: relative;
}

.selection_wrapper .selection_element {
    position: absolute;
    z-index: 1;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    border: 1px dashed #eee;
    background-color: #aaa;
    opacity: 0.6;
}

.selection_wrapper .selection_content {
    position: absolute;
    height: 100%;
    width: 100%;
    border: 1px solid #eee;
}

.selection_wrapper .selection_content tr {
    display: flex;
    justify-content: space-between;
}

.selection_wrapper .selection_content .selection_item {
    box-sizing: border-box;
    border-left: 1px solid #eee;
    border-top: 1px solid #eee;
    transition: all .2s ease-out;
    -webkit-transition: all .2s ease-out;
    -moz-transition: all .2s ease-out;
    -ms-transition: all .2s ease-out;
    -o-transition: all .2s ease-out;
}

.selection_wrapper .selection_content .selection_item_active {
    background: #ffdea2;
}