hojaestilos.css

* {
    font-family: Arial, Helvetica, sans-serif
}
body {
    background-color:#A5AEBB;
}
article {
    margin: 100px 0; 
    padding: 50px 0;
    border-top: 1px solid #242424;
    border-bottom: 1px solid #242424;
}
h1 {
    font-size:60px; 
    margin-bottom:0;
    font-weight: 900; 
    text-transform: uppercase;
}
h2 {
    font-size:20px; 
    margin-top:0;
    font-weight: 900
}
h3 {
    font-size:40px; 
    margin-top:0;
    margin-bottom:0;
    font-weight: 900; 
    text-transform: uppercase;
}
h4 {
    font-size:20px; 
    margin-top:0;
}
h5 {
    font-size:20px; 
    font-weight: 900;
    text-transform: uppercase;
}
a {
    color:  #020874;
    font-size:20px; 
    margin-top:0;
}
p {
    line-height: 1.5;
    font-size:20px;
}
img {
    max-width: 100%; 
    height: auto;
}
form {
    font-size:20px;
}
figure {
    margin: 0;
}
form {
    width: 500px; 
    padding: 1em; 
    border: 2px solid #CCC; 
    border-radius: 1em;
}
footer {
    background-color: #242424; 
    color: #fff; 
    padding: 25px; 
    margin-top:50px; 
    text-align: center
}
footer a {
    color: #fff;
}
/*
    Responsive Web Design
    Datos extraídos del framework Bootstrap como los más comunes
 */
.container {
    width: 100%; 
    padding: 10px; 
    margin: 0 auto;
}
@media (min-width: 576px) {                 /* web_browser > 576px  mobile (.col-xs-) */
    .container {
        max-width: 540px;
    }
}
@media (min-width: 768px) {                 /* web_browser > 768px  tablet (.col-sm-) */
    .container {
        max-width: 720px;
    }
}
@media (min-width: 992px) {                 /* web_browser > 992px  laptop (.col-md-) */
    .container {
        max-width: 960px;
    }
}  
@media (min-width: 1200px) {                /* web_browser > 1200px desktop (.col-lg-) */
    .container {
        max-width: 1140px;
    }
}