/*
Tool
*/
.is-tool {
    position: absolute;
    top: 0;
    left: 0;
    display: none;
    z-index: 10001;
    background: rgba(239, 239, 239, 0.9);
    box-sizing: border-box;
    position: absolute;
    padding: 0;
    outline: none;
}

.is-tool button {
    width: 100%;
    height: 25px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    user-select: none;
    -moz-user-select: none;
    -khtml-user-select: none;
    -webkit-user-select: none;
    -o-user-select: none;

    /* backward */
    color: #000;
    float: left;
    display: inline-block;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    letter-spacing: 1px;
    font-size: 12px;
    font-weight: 300;
    text-transform: uppercase;
    text-align: center;
    line-height: unset;
    position: relative;
    border-radius: 0;
    transition: all ease 0.3s;
}

.is-tool button:focus {
    outline: none
}

.is-tool:hover {
    z-index: 10003;
}

.is-tool.active {
    display: flex
}