section#principal{
    padding: 80px 0 40px;
}
section{
    padding: 40px 0;
}
a{
    text-decoration: none !important;
}

h4.line{
    text-align: left;
    font-size: 24px;
    margin-top: 0;
    text-transform: none;
    padding-bottom: 0;
    font-weight: 300;
    font-family: "Helvetica Neue", Helvetica;
}
section#principal h4.line{
    margin-top: 30px;
}
.doc_box{
    width: 100%;
    max-width: 340px;
    margin: 30px auto 0;
}
#principal .doc_box p, .doc_box p{
    font-size: 0.95em;
    font-weight: 300;
    font-family: "Helvetica Neue", Helvetica;
    line-height: 1.4em;
    padding-top: 10px;
}
.doc_box a{
    background: #2B3337;
    border: 1px solid #CCCCCC;
    border-radius: 6px;
    line-height: 1.5em;
    width: 100%;
    display: block;
    padding: 10px 20px 15px;
    color: #fff;
    background-repeat: no-repeat;
    background-position: 50% -30px;
    background-size: 100%;
    min-height: 190px;
}
.doc_box:hover a{
    box-shadow: 0px 1px 12px 0px rgba(0,0,0,0.25);
}


.doc_box.videos a {
    background-image: url(../img/documentation/bg_doc_videos.png);
}
.doc_box.dashboard a {
    background-image: url(../img/documentation/bg_doc_dashboard.png);
}
.doc_box.resources a {
    background-image: url(../img/documentation/bg_doc_resources.png);
}
.doc_box.api a {
    background-image: url(../img/documentation/bg_doc_api.png);
}
.doc_box.bigmler a {
    background-image: url(../img/documentation/bg_doc_bigmler.png);
}
.doc_box.bindings a {
    background-image: url(../img/documentation/bg_doc_bindings.png);
}
.doc_box.tutorials a {
    background-image: url(../img/documentation/bg_doc_bindings.png);
}
.doc_box.ml101 a {
    background-image: url(../img/documentation/bg_doc_101.png);
}
@media
(-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
    .doc_box.videos a {
        background-image: url(../img/documentation/bg_doc_videos@2x.png);
    }
    .doc_box.dashboard a {
        background-image: url(../img/documentation/bg_doc_dashboard@2x.png);
    }
    .doc_box.resources a {
        background-image: url(../img/documentation/bg_doc_resources@2x.png);
    }
    .doc_box.api a {
        background-image: url(../img/documentation/bg_doc_api@2x.png);
    }
    .doc_box.bigmler a {
        background-image: url(../img/documentation/bg_doc_bigmler@2x.png);
    }
    .doc_box.bindings a {
        background-image: url(../img/documentation/bg_doc_bindings@2x.png);
    }
    .doc_box.tutorials a {
        background-image: url(../img/documentation/bg_doc_tutorials@2x.png);
    }
    .doc_box.ml101 a {
        background-image: url(../img/documentation/bg_doc_101@2x.png);
    }
}

.doc_box img{
    width: 100%;
    max-width: 134px;
    margin-top: 10px;
}
.doc_box strong{
    display: block;
    font-weight: 300;
    font-family: HelveticaNeue-Light, "Helvetica Neue", Helvetica;
    font-size: 1.5em;
    color: #fff;
}
.doc_box span{
    display: block;
    font-weight: 300;
    font-family: HelveticaNeue-Light, "Helvetica Neue", Helvetica;
    font-size: 1.1em;
    color: #749201;
}
.doc_box:hover span{
    color: #749201;
}
.doc_box.disabled {
    opacity: 0.4;
    box-shadow: none;
}
@media screen and  (max-width: 768px){
    section#principal{
        padding:50px 0 40px;
    }
}