.input-numeric-container {
    background: #fff;
    padding: 1em;
    margin: 0.8em auto;
    max-width: 450px;
}

.input-numeric {
    width: 100%;
    padding: 0.8em 0.2em;
    margin-bottom: 0.8em;
    box-sizing: border-box;
    border: 1px solid silver;
    outline-color: #4CAF50;
}

.table-numeric {
    width: 100%;
    border-collapse: collapse;
}

    .table-numeric td {
        vertical-align: top;
        text-align: center;
        width: 33.33333333333%;
        border: 0;
    }

    .table-numeric button {
        position: relative;
        cursor: pointer;
        display: block;
        width: 100%;
        box-sizing: border-box;
        padding: 0.6em 0.3em;
        font-size: 1em;
        border-radius: 0.1em;
        outline: none;
        user-select: none;
    }

        .table-numeric button:active {
            top: 2px;
        }

button:nth-of-type(1) {
    color: black;
    background-color: #10FFB4;
    transition: 0.2s ease-in-out;
    border-left: 3px transparent solid;
    border-right: 3px transparent solid;
}

    button:nth-of-type(1):hover {
        color: #10FFB4;
        background-color: black;
        border-left: #10FFB4 3px solid;
        border-right: #10FFB4 3px solid;
    }

.box {
    display: flex;
    flex-wrap: wrap;
}

.numBtn {
    display: inline-block;
    border: 2px solid #333;
    border-radius: 5px;
    text-align: center;
    width: 6vw;
    height: 4vw;
    font-size: 28px;
    font-weight: 600;
    font-family: Cambria Math;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    text-decoration: none;
    color: inherit;
    background: rgba(255,255,255,0.7);
    transition: all 0.3s ease-in-out;
}

    .numBtn:hover {
        box-shadow: inset 0 0 2px rgba(0,0,0,1);
        text-decoration: none;
        background: #347C2C;
        color: white;
        /*font-size: 35px;*/
        -webkit-transition-duration: 0.6s; /* Safari */
        transition-duration: 0.6s;
    }

.clearBtn {
    display: inline-block;
    border: 2px solid #333;
    border-radius: 5px;
    text-align: center;
    width: 6vw;
    height: 4vw;
    font-size: 28px;
    font-weight: 600;
    font-family: Cambria Math;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    text-decoration: none;
    color: inherit;
    background: rgba(231, 76, 60);
    transition: all 0.3s ease-in-out;
}

    .clearBtn:hover {
        box-shadow: inset 0 0 2px rgba(0,0,0,1);
        text-decoration: none;
        background: #3498DB;
        color: white;
        /*font-size: 35px;*/
        -webkit-transition-duration: 0.6s; /* Safari */
        transition-duration: 0.6s;
    }

.btnOK {
    display: inline-block;
    border: 2px solid #333;
    border-radius: 5px;
    text-align: center;
    width: 18.8vw;
    height: 4vw;
    font-size: 28px;
    font-weight: 600;
    font-family: Cambria Math;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    text-decoration: none;
    color: inherit;
    background: #8B8000;
    transition: all 0.3s ease-in-out;
}

    .btnOK:hover {
        box-shadow: inset 0 0 2px rgba(0,0,0,1);
        text-decoration: none;
        background: #3498DB;
        color: white;
        /*font-size: 35px;*/
        -webkit-transition-duration: 0.6s; /* Safari */
        transition-duration: 0.6s;
    }

h2 {
    text-align: center;
    color: black;
    font-size: 28px;
    width: 100%;
    margin: 10px 10px;
    position: relative;
    line-height: 58px;
    font-weight: 400;
}

h1 {
    text-align: center;
    color: #46a294;
    font-size: 28px;
    width: 100%;
    margin: 10px 10px;
    position: relative;
    line-height: 58px;
    font-weight: bold;
}

    h1:before {
        content: " ";
        position: absolute;
        left: 50%;
        bottom: 0;
        width: 100px;
        height: 2px;
        font-weight: bold;
        background-color: #2079df;
        margin-left: -50px;
    }