layout.css

/* resizer */
.resizer_Vcontainer {
    display: flex;
    flex-direction: column;
    height: 100%;
    & > .resizer_content {
        min-height: 0px;
        height: 100%;
        overflow: hidden;
        padding: 3px;
    }
    & > .resizer_splitter {
        height: 3px;
        margin: 2px;
        width: calc(100% - 10px);
        border-radius: 3px;
        flex: none;
        cursor: row-resize;
        background-color: #7c7c7c;
    }
    & > .resizer_splitter:hover {
        background-color: #acacac;
    }
}
.resizer_Hcontainer {
    display: flex;
    flex-direction: row;
    height: 100%;
    & > .resizer_content {
        min-width: 0px;
        width: 100%;
        overflow: hidden;
        padding: 3px;
    }
    & > .resizer_splitter {
        width: 3px;
        margin: 2px;
        height: calc(100% - 10px);
        border-radius: 3px;
        flex: none;
        cursor: col-resize;
        background-color: #7c7c7c;
    }
    & > .resizer_splitter:hover {
        background-color: #acacac;
    }
}