.down-lite {
    margin-bottom: 20px;
}

.volumetric-button {
    display: inline-block;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
    text-shadow: 0 -1px rgba(0,0,0,.5);
    user-select: none;
    padding: .7em 1.5em;
    border: 1px solid rgb(80,32,0);
    border-radius: 5px;
    outline: none;
    background: rgb(147,80,36) linear-gradient(rgb(106,58,26), rgb(147,80,36) 80%);
    box-shadow:
            0 6px rgb(86,38,6),
            0 3px 15px rgba(0,0,0,.4),
            inset 0 1px rgba(255,255,255,.3),
            inset 0 0 3px rgba(255,255,255,.5);
    transition: .2s;
}
.volumetric-button:hover {
    background: rgb(167,91,41) linear-gradient(rgb(126,69,31), rgb(167,91,41) 80%);
}
.volumetric-button:active {
    background: rgb(120,63,25) linear-gradient(rgb(120,63,25) 20%, rgb(167,91,41));
    box-shadow:
            0 2px rgb(86,38,6),
            0 1px 6px rgba(0,0,0,.4),
            inset 0 1px rgba(255,255,255,.3),
            inset 0 0 3px rgba(255,255,255,.5);
    -webkit-transform: translate(0, 4px);
    transform: translate(0, 4px);
}

.button-volumetric-little-green {
    display: inline-block;
    padding: 0 25px;
    font-size: 24px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    outline: none;
    color: #fff;
    background-color: #4CAF50;
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px #999;
}

.button-volumetric-little-green:hover {
    color: #fff;
    text-decoration: none;
    background-color: #3e8e41
}

.button-volumetric-little-green:active {
    background-color: #3e8e41;
    box-shadow: 0 3px #666;
    transform: translateY(2px);
}

.button-volumetric-medium-green {
    display: inline-block;
    padding: 15px 25px;
    font-size: 24px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    outline: none;
    color: #fff;
    background-color: #4CAF50;
    border: none;
    border-radius: 15px;
    box-shadow: 0 9px #999;
}

.button-volumetric-medium-green:hover {
    color: #fff;
    text-decoration: none;
    background-color: #3e8e41
}

.button-volumetric-medium-green:active {
    background-color: #3e8e41;
    box-shadow: 0 5px #666;
    transform: translateY(4px);
}

.matrix {
    width: 80%;
    table-layout: fixed;
    margin-bottom: 60px;
}

.matrix-cell {
    position: relative;
    border: 1px solid black;
    text-align: center;
    height: 50px;
}

.matrix-cell-number {
    position: absolute;
    top: 2px;
    left: 3px;
    display: inline-block;
    height: 20px;
    width: 20px;
    line-height: 20px;
    border: 0.5px solid gray;
    border-radius: 50%;
    border-collapse: collapse;
}

.display-info {
    font-size: 20px;
}

.result-width-border {
    font-size: 50px;
    text-align: center;
    min-width: 200px;
    min-height: 100px;
    display: inline-block;
    padding: 10px 15px;
    border: 3px ridge yellowgreen;
}

.pagination li {
    margin: 16px;
    font-size: 24px;
}