/* roboto-regular - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  src: url('fonts/roboto-v30-latin-ext_latin-regular.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-regular.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-regular.svg#Roboto') format('svg'); /* Legacy iOS */
}

/* roboto-italic - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 400;
  src: url('fonts/roboto-v30-latin-ext_latin-italic.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-italic.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-italic.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-italic.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-italic.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-italic.svg#Roboto') format('svg'); /* Legacy iOS */
}

/* roboto-700 - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  src: url('fonts/roboto-v30-latin-ext_latin-700.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-700.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-700.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-700.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-700.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-700.svg#Roboto') format('svg'); /* Legacy iOS */
}

/* roboto-700italic - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 700;
  src: url('fonts/roboto-v30-latin-ext_latin-700italic.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-700italic.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-700italic.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-700italic.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-700italic.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-700italic.svg#Roboto') format('svg'); /* Legacy iOS */
}

/* roboto-900 - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 900;
  src: url('fonts/roboto-v30-latin-ext_latin-900.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-900.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-900.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-900.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-900.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-900.svg#Roboto') format('svg'); /* Legacy iOS */
}

/* roboto-900italic - latin-ext_latin */
@font-face {
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 900;
  src: url('fonts/roboto-v30-latin-ext_latin-900italic.eot'); /* IE9 Compat Modes */
  src: local(''),
       url('fonts/roboto-v30-latin-ext_latin-900italic.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
       url('fonts/roboto-v30-latin-ext_latin-900italic.woff2') format('woff2'), /* Super Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-900italic.woff') format('woff'), /* Modern Browsers */
       url('fonts/roboto-v30-latin-ext_latin-900italic.ttf') format('truetype'), /* Safari, Android, iOS */
       url('fonts/roboto-v30-latin-ext_latin-900italic.svg#Roboto') format('svg'); /* Legacy iOS */
}

@font-face {
    font-family: charter;
    font-style: normal;
    font-weight: normal;
    font-stretch: normal;
    src: url('fonts/charter_regular.woff2') format('woff2');
}

@font-face {
    font-family: charter;
    font-style: italic;
    font-weight: normal;
    font-stretch: normal;
    src: url('fonts/charter_italic.woff2') format('woff2');
}

@font-face {
    font-family: charter;
    font-style: normal;
    font-weight: bold;
    font-stretch: normal;
    src: url('fonts/charter_bold.woff2') format('woff2');
}

@font-face {
    font-family: charter;
    font-style: italic;
    font-weight: bold;
    font-stretch: normal;
    src: url('fonts/charter_bold_italic.woff2') format('woff2');
}

/* Reset */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
}

* {
    box-sizing: border-box;
}

/* Variables */
:root {
    --desktop-font-size: 1.2rem/1.5;
    --mobile-font-size: 1rem/1.4;
    --black-color: #000;
    --blue-color: #005E9E;
    --grey-color: #9D9C9C;
}

body {
    font-family: charter, serif;
    font-size: var(--desktop-font-size);
    margin: 0 auto;
    max-width: 768px;
    padding: 0 0.5rem;
    color: var(--black-color);
}
h1,h2,h3,h4,h5,h6 { font-family: 'Roboto', sans-serif; }
h1,h2,h3,h4,h5,h6,blockquote,dl,img,figure {
    margin: 2rem 0 1rem 0;
}
h1,h2,h3,h4,h5,h6 { font-weight: bold; }
h1 { font-size: 200%; }
h2 { font-size: 150%; }
h3 { font-size: 120%; }
h4,h5,h6 { font-size: 100%; }
h5, h6 { text-transform: uppercase; }
p { margin: 1rem 0 1rem 0; }
ul, ol { margin: 1rem 0; padding: 0 0 0 2rem; }
a,a:visited { color: var(--blue-color); text-decoration: none;}
a:hover,a:focus { color: var(--grey-color); text-decoration: underline;}
q {
    font-style: italic;
}
header {
    margin: 0;
    padding: 0;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

img#photo-gas {
    height: 100px;
}

header h1 {
    margin-top: 1rem;
    color: var(--blue-color);
    float: left;
}

img#logo-mines {
    margin-top: 1rem;
    float: right;
    width: 192px;
}

address {
    background: whitesmoke;
    border-left: 10px solid var(--blue-color);
    display: block;
    font-family: 'Roboto', sans-serif;
    font-style: normal;
    padding: 1rem;
}

/* Mobile Styling */
@media screen and (max-width: 600px) {
    h1 { font-size: 120%; }
    img#logo-mines { width: 128px; }
    body {
	font-size: var(--mobile-font-size);
    }
}
@media screen and (min-width: 600px) {
    h1 { font-size: 140%; }
    img#logo-mines { width: 150px; }
    body {
	font-size: var(--mobile-font-size);
    }
}
@media screen and (min-width: 768px) {
    h1 { font-size: 200%; }
    img#logo-mines { width: 192px; }
    body {
	font-size: var(--desktop-font-size);
    }
}

/* Extra small devices (phones, 600px and down) */
/* @media only screen and (max-width: 600px) {...} */

/* Small devices (portrait tablets and large phones, 600px and up) */
/* @media only screen and (min-width: 600px) {...} */

/* Medium devices (landscape tablets, 768px and up) */
/* @media only screen and (min-width: 768px) {...} */

/* Large devices (laptops/desktops, 992px and up) */
/* @media only screen and (min-width: 992px) {...} */

/* Extra large devices (large laptops and desktops, 1200px and up) */
/* @media only screen and (min-width: 1200px) {...} */