main.css

/* General */
body {
    font-family: Roboto, 'Helvetica Neue', 'Helvetica', sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
}
h1 {
    font-size: 2.5em;
    font-weight: 300;
    margin: 0 0 1.5em 0;
}
h2 {
    font-size: 2em;
    font-weight: 300;
    margin: 0 0 1.5em 0;
}
a {
    color: rgb(29, 176, 238);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
pre {
    background-color: #fafafa;
    border-radius: 7px;
    border: solid 1px #d3d3d3;
    font-family: Menlo, Consolas, monospace;
    line-height: 1.5em;
    max-width: 50em;
    overflow: auto;
    padding: 1em;
    text-align: left;
}
pre.code .operator, pre.code .keyword {
    color: #017c9d;
}
pre.code .string {
    color: #15b8ae;
}
/* Header */
.header {
    background-color: rgb(27, 64, 118);
    color: #fff;
    margin: 0 0 5em 0;
    padding: 1em;
    text-align: left;
}
.header h1 {
    display: inline-block;
    font-size: 2em;
    line-height: 2em;
    margin: 0;
}
.header-buttons {
    float: right;
}
/* Buttons */
.button {
    color: #fff;
    display: inline-block;
    padding: 1em;
    text-decoration: none;
    transition: background-color .1s ease;
}
.button:hover {
    background-color: rgb(29, 176, 238);
    text-decoration: none;
}
.button-icon {
    display: inline-block;
    fill: #fff;
    height: 2em;
    vertical-align: middle;
    width: 2em;
}
.button-label {
    margin-left: .5em;
    vertical-align: middle;
    width: 10em;
}
/* Install Instructions */
#gradle-option {
    border-color: rgb(132, 183, 43);
}
#maven-option {
    border-color: rgb(253, 105, 34);
}
#jar-option {
    border-color: rgb(90, 131, 158);
}
#install-container {
    background-color: #fafafa;
    border: solid 1px #d3d3d3;
    border-radius: 7px;
    font-size: 1.2em;
    margin: 2em auto 4em auto;
    overflow: auto;
    padding: 1em;
    position: relative;
    transition: height .2s ease .2s, max-width .2s ease .2s;
}
#install-container pre {
    border: none;
    border-radius: 0;
    margin: 0;
    padding: 0;
}
.install-option {
    border-bottom: solid 3px;
    cursor: pointer;
    display: inline-block;
    font-size: 1.5em;
    font-weight: 300;
    margin: 0 2px 0 2px;
    padding: 0 1em .2em 1em;
    transition: opacity .1s ease;
    vertical-align: middle;
    width: 3.5em;
}
.one-line {
    height: 1.5em;
    max-width: 25em;
}
.multiline {
    height: 7.5em;
    max-width: 30em;
}
.multiline-long {
    height: 7.5em;
    max-width: 45em;
}
.install-instructions {
    position: absolute;
    transition: opacity .2s ease .4s;
}
/* Sections */
.section {
    border-color: #ddd;
    border-style: solid;
    border-width: 1px 0 0 0;
    padding: 2em 0 0 0;
}
.section p {
    font-size: 1.2em;
    font-weight: 300;
    margin: 0 auto 2em auto;
    max-width: 40em;
}
.section div {
    margin: 0 auto 2em auto;
    max-width: 50em;
}
.section pre {
    margin: 0 auto 2.4em auto;
}
.doc-link {
    color: rgb(27, 64, 118);
    display: inline-block;
    fill: rgb(27, 64, 118);
    margin: 1em;
    text-decoration: none;
    transition: fill .1s, color .1s ease;
    width: 7em;
}
.doc-link:hover {
    color: rgb(29, 176, 238);
    fill: rgb(29, 176, 238);
    text-decoration: none;
}
.doc-link .icon {
    display: block;
    height: 4em;
    margin: 1em auto 1em auto;
    width: 4em;
}
/* Animation */
.inactive {
    opacity: .4;
}
.inactive:hover {
    opacity: .6;
}
.hidden {
    opacity: 0;
    transition: opacity .2s ease;
}
.removed {
    display: none;
}
@media (max-width: 650px) {
    .button-label {
        display: none;
    }
    .icon {
        height: 2.5em;
        margin: .5em auto .5em auto;
        width: 2.5em;
    }
    .doc {
        margin: .5em;
    }
}
@media (max-width: 420px) {
    pre {
        border-radius: 0;
        border: none;
    }
    .header {
        margin: 0 0 2em 0;
    }
    #install-container {
        border-radius: 0;
        border: none;
        font-size: 1em;
    }
    #download-button {
        display: none;
    }
    #install-container {
        margin: 2em auto 2em auto;
    }
    .install-option {
        font-size: 1.2em;
        width: 3em;
    }
}