.nav-pills .nav-link.active,
.nav-pills .show>.nav-link {
    color: #fff;
    background-color: #00878F;
}

@font-face {
    font-family: 'nunitoregular';
    src: url('nunito-regular-webfont.woff2') format('woff2'), url('nunito-regular-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}

iframe {
    border: none;
    align-self: center;
    align-content: center;
    align-items: center;
}

center {
    width: 70%;
    max-width: 100%;
    margin: 0px auto;
    font-family: 'Roboto', sans-serif;
    color: #444;
}

header {
    background-color: #00878F;
    color: white;
    padding: 6px;
    font-family: 'Roboto', sans-serif;
    box-shadow: 1px 1px 5px #555555;
    position: relative;
}

h1 {
    margin: 0px;
    font-family: 'Roboto', sans-serif;
    font-size: 32;
}

h2 {
    color: #00878f;
}

h3 {
    color: #00878f;
}

.shadow {
    box-shadow: 1px 1px 5px #555555;
    /* height: 500px; */
}

.navmenu {
    margin-top: 10px;
    margin-left: 0px;
}

.navm {
    margin: 2px;
}

radio {
    float: left;
}

.content {
    margin: 10px 10px 10px 10px
}

table {
    margin: 5px 24px 5px 12px;
    border: #000000
}

.tbl {
    margin-top: 10px;
    margin-bottom: 5px;
    border: #000000
}

td {
    color: #555;
}


/* tr {
    width: 100%;
} */

.button {
    text-decoration: none;
    border: none;
    color: white;
    background-color: #00878F;
    padding: 6px 24px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 1px 1px 6px #555;
    outline: none;
    margin: 12px auto 0px auto;
    display: inline-block;
}

.button:hover {
    box-shadow: 1px 1px 3px #444;
}

hr {
    width: 97%;
    margin-right: 10px;
}

input[type=range] {
    -webkit-appearance: none;
    outline: none;
    width: auto;
    margin: 6px;
}

input {
    width: 95px;
    height: 20px;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    border: 0px;
    height: 15px;
    width: 15px;
    margin-top: -6px;
    border-radius: 7.5px;
}

input.disabled[type=range]::-webkit-slider-thumb {
    background: #999;
}

input.enabled[type=range]::-webkit-slider-thumb {
    background: #00878F;
    cursor: pointer;
    box-shadow: 1px 1px 2px #777, 0px 0px 1px #777;
}

input[type=range]::-webkit-slider-runnable-track {
    width: inherit;
    height: 4px;
    background: #ccc;
    border-radius: 1px;
}

input.enabled[type=range]::-webkit-slider-runnable-track {
    cursor: pointer;
}

p {
    font-family: 'Nunito', sans-serif;
}


/* section styles */

section article {
    width: 33%;
    float: left;
}

section p {
    margin: 5px 0;
}

section ul {
    margin-top: 0;
}

@media screen and (max-width: 900px) {
    center {
        width: 90%;
    }
    .content {
        height: 600px;
    }
}